Exhibit 10.17

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                              STOCK PURCHASE AGREEMENT

                                      among

                                   DIANNE R. MARTZ

                                  A.B. CHARLTON, III

                                  NOVA HOLDINGS, INC.

                                          and

                             HORIZON HEALTH SYSTEMS, INC.











                               Dated as of June 5, 1997




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                               STOCK PURCHASE AGREEMENT

     STOCK PURCHASE AGREEMENT, dated as of June 5, 1997 among DIANNE MARTZ 
("Martz"), A. B. CHARLTON, III ("Charlton"), NOVA HOLDINGS, INC., a Delaware 
Corporation and an affiliate of Welsh Carson Anderson & Stowe VII, L.P. (the 
"Company"), and HORIZON HEALTH SYSTEMS, INC. ("Horizon"). Martz and Charlton 
are sometimes referred to herein individually as "Seller" and collectively as 
"Sellers"."

     WHEREAS, Sellers collectively own all of the issued and outstanding 
capital stock of Horizon; and

     WHEREAS, Sellers wish to sell to the Company, and the Company wishes to 
purchase from Sellers, all of the shares of capital stock of Horizon owned by 
Sellers for cash on the terms and conditions hereinafter set forth.

     NOW THEREFORE, in consideration of the premises and the mutual covenants 
herein contained, the parties hereto agree as follows:


                                 ARTICLE I.

          PURCHASE OF HORIZON SHARES BY THE COMPANY FROM SELLERS;
                         ADJUSTMENT TO PURCHASE PRICE;
                                 CLOSING DATE

     SECTION 1.01  Purchase and Sale of Horizon Shares. Subject to the terms 
and conditions hereinafter set forth, on the Closing Date, Sellers agree to 
sell to the Company, and the Company agrees to purchase from Sellers, all of 
the issued and outstanding shares (consisting of 100 shares of No Par Common 
Stock), of Horizon (the "Shares"), for an aggregate price of Twenty-Nine 
Million ($29,000,000.00) Dollars (the "Purchase Price"), such price being 
subject to increase or decrease as provided in Section 1.03. As payment in 
full for the shares, the Company shall, against delivery of a certificate or 
certificates evidencing the Shares from Martz and Charlton registered in the 
Company's name, pay an amount equal to the aggregate purchase price for the 
Shares as follows:

          (a)  Two Million Nine Hundred Thousand ($2,900,000.00) Dollars shall 
     be placed in escrow to be disbursed pursuant to the Escrow Agreement which
     is attached hereto as Annex I and made a part hereof. Upon the first 
     anniversary of the Closing Date if no claims have been made against the 
     escrowed funds, the amount held in escrow shall be



                                   2



          reduced by one half to One Million Four Hundred Fifty Thousand 
          ($1,450,000.00) Dollars.

     (b)  A part of the Purchase Price equal to the balance of the Refunds 
          Payable, as defined in Section 4.01(d), which remain outstanding 
          at the Closing Date shall be placed in a separate escrow fund to be 
          dispersed pursuant to the Refunds Payable Escrow Agreement which is 
          attached hereto as Annex II and made a part hereof.

     (c)  79% of the balance of the Purchase Price as adjusted shall be paid 
          to Martz and 21% of the balance of the Purchase Price as adjusted 
          shall be paid to Charlton.

     Sellers and Horizon acknowledge that in connection with its acquisition 
of the Stock, the Company intends to obtain certain financing from 
NationsBank of Tennessee, N.A. (the "Bank"). In order to facilitate the 
Company's transaction with the Bank, the closing of the sale of the Stock 
shall be conducted in three steps, which are intended to occur immediately 
one after the other as follows:

     (a)  The Purchase Price to be paid at Closing pursuant to this Section 
          1.01 shall be paid to the respective Sellers in the form of notes 
          (the "Temporary Notes"), in substantially the form of Exhibit 1.01 
          hereto, in an aggregate principal amount of the Purchase Price, 
          payable 79% to Martz and 21% to Charlton. The Temporary Notes shall 
          be secured only by a pledge to Sellers of 79 shares and 21 shares 
          of Stock, respectively.

     (b)  Immediately after the delivery of the Temporary Notes Buyer shall 
          consummate its loan transaction with the Bank.

     (c)  Immediately following the events described in (a) and (b) above, 
          Buyer shall retire the Temporary Notes in accordance with the terms 
          thereof.

     SECTION 1.02  Other Agreements. In addition to the transactions to occur 
on the Closing Date pursuant to Section 1.01, each of the Other Agreements 
listed in Schedule 5.01 shall be executed and delivered by the parties 
thereto on the Closing Date concurrently with the consummation of such 
transactions.

     SECTION 1.03  Adjustment to Purchase Price.

     (a)  Horizon shall have delivered to Company five (5) days prior to 
Closing an estimated balance sheet of Horizon as of the Closing Date (the 
"Estimated Closing Balance Sheet") which is


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attached as Schedule 1.03. The Estimated Closing Balance Sheet was prepared, 
based on good faith estimates, in accordance with generally accepted 
accounting principles consistently applied with those used in the preparation 
of the audited and unaudited financial statements for Horizon referred to in 
Section 2.05, and (i) is intended to fairly present, in all material 
respects, the estimated balance sheet of Horizon as of the Effective Date. 
Refunds Payable, as defined in Section 4.01(d) shall be shown as a liability 
on the Estimated Closing Balance Sheet to the extent not paid prior to the 
Effective Date, and the Four Hundred Fifty Thousand ($450,000.00) Dollars 
accrued payable to the Martz for the 1996 bonus shall have been paid or 
otherwise eliminated. Horizon will consult with Company and the Memphis 
office of Ernst & Young LLP ("E&Y") as to all pro forma adjustments (and will 
provide all such information and supporting data in connection therewith as 
Company or E&Y may request.

     (b) If the Estimated Closing Balance Sheet shows (i) Cash other than 
Eight Hundred Thousand ($800,000.00) Dollars, or (ii) Equity other than Four 
Million Five Hundred Thousand ($4,500,000.00) Dollars, then on the Closing 
Date the Purchase Price, shall be adjusted as and to the extent provided in 
the following table:




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   Equity                   Cash Balance               Purchase Price Adjustment
                                              
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4.5 million             $800,000.00                 None
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4.5 million             More than $800,000.00       None
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4.5 million             Less than $800,000.00       Reduce by cash shortfall
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More than 4.5 million   $800,000.000                None
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More than 4.5 million   More than $800,000.00       Increase by cash excess, 
                                                    but not more than equity 
                                                    excess
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More than 4.5 million   Less than $800,000.00       Reduce by cash shortfall
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Less than 4.5 million   $800,000.00                 Reduce by equity shortfall
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Less than 4.5 million   More than $800,000.00       Reduce by equity shortfall
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Less than 4.5 million   Less than $800,000.00       Reduce by greater shortfall
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     In addition, if at the Effective Date the external bank indebtedness of 
Horizon is less than Two Million Five Hundred Thousand ($2,500,000.00) 
Dollars, the amount by which said external bank debt is less than Two Million 
Five Hundred Thousand ($2,500,000.00) Dollars shall be added to the Purchase 
Price to be paid at the Closing. Conversely, if the external bank debt of 
Horizon shall exceed Two Million Five hundred Thousand ($2,500,000.00) 
Dollars at the Effective Date, the Purchase Price shall be reduced dollar for 
dollar for all external bank debt in 

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excess of Two Million Five Hundred Thousand ($2,500,000.00) Dollars.

     (c)  As promptly as practicable, but in no event later than sixty (60) 
days after the Closing Date, Horizon will cause to be prepared and delivered 
to Sellers a final balance sheet for Horizon as of the Effective Date (the 
"Final Closing Balance Sheet").  The Final Closing Balance Sheet will be 
audited by Price & Associates and, except as indicated therein, will be 
prepared in accordance with generally accepted accounting principles applied 
consistently with those used in  the preparation of the audited financial 
statements of Horizon, and will (i) fairly present, in all material respects, 
the actual balance sheet of Horizon as of the Effective Date, (ii) reflect 
any other modification, change or addition agreed to between Sellers and the 
Company, and (iii) include a recalculation of Cash and Equity.  Refunds 
Payable, as defined in Section 4.01(d) shall be shown as a liability on the 
Final Closing Balance Sheet to the extent not paid prior to the Effective 
Date, and the Four Hundred Fifty Thousand ($450,000.00) Dollars accrued 
payable to Martz for the 1996 bonus shall be paid or eliminated.  Sellers 
will consult with the Company as to all final adjustments which shall be 
reasonably satisfactory to Sellers.  The Final Closing Balance Sheet shall be 
accompanied by a report of Price & Associates stating that the Final Closing 
Balance Sheet has been prepared in accordance with this Section 1.03(c) and 
shall be subject to Section 1.03(e).

     (d)  If the Final Closing Balance Sheet shows (y) Cash other than as 
shown on on the Estimated Closing Balance Sheet, or (z) Equity other than as 
shown on the Estimated Closing Balance Sheet, the Purchase Price shall be 
recalculated as provided in the table in Section 1.03(b), and any further 
increase or decrease in the Purchase Price, after giving effect to the 
adjustment provided in Section 1.03(b), shall be paid in cash by the Company 
to the Sellers, or by Sellers to the Company, as the case may be.  Any such 
cash payment shall be made by the Company or Sellers, as the case may be, ten 
(10) days after the later of delivery of the Final closing Balance Sheet 
pursuant to paragraph (c) hereof or the resolution of any dispute in 
accordance with Subsection (e) below by payment of such amount, in 
immediately available funds, by wire transfer to an account designated in 
writing by the Company or Sellers, as the case may be.

     (e)  In the event of a disagreement between Company and Martz and 
Charlton as to the amounts determined pursuant to the Final Closing Balance 
Sheet, Company and Sellers agree that they will designate another firm of 
nationally recognized public accountants (other than Ernst & Young LLP and 
any other firm with a material relationship to any of the parties) mutually 
acceptable to Company and Sellers to review the Final Closing Balance Sheet 
and the adjustments provided therein.  Company and Sellers further agree that 
the determinations of such accounting firm as to any disputed

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amounts shall be conclusive. The expenses of Price & Associates incurred in 
connection with the matters described in Sections 1.03(a) and (c) above shall 
be borne by Horizon (and an accrual therefor shall be reflected on the Final 
Closing Balance Sheet), the expense of E&Y hereunder shall be borne by the 
Company, and the expenses incurred by the accounting firm retained pursuant 
to this Section 1.03(e) shall be shared by Sellers and the Company equally.

     SECTION 1.04  Closing Date.  The closing (herein the "Closing") of the 
transactions described in Section 1.01 shall take place at the offices of 
Bass, Berry & Sims, PLC, Nashville, Tennessee on June 5, 1997, effective as 
of Midnight, May 31, 1997, Memphis time, ("Effective Date") or at such other 
date and time as may be mutually agreed upon among the Company and Sellers 
(such actual date and time of closing being herein called the "Closing Date").

                              ARTICLE II.

                    REPRESENTATIONS AND WARRANTIES
                               OF SELLERS

     Martz and Charlton hereby severally and jointly represent and warrant to 
the Company as follows: (The representations and warranties of the Sellers 
regarding matters pertaining to themselves in Sections 2.01, 2.02, 2.03, 2.04 
or 2.35 are made severally and not jointly by Martz and Charlton, 
respectively, each as to herself, or himself, and not as to the other.)

     SECTION 2.01 Organization, Qualification and Corporate Power; 
Subsidiaries.

     (a) Martz is a resident of Nashville, Davidson County, Tennessee and 
Charlton is a resident of Knoxville, Knox County, Tennessee, and each has the 
power and authority to own the Shares and to execute, deliver and perform 
this Agreement and the Other Agreements (as defined in Section 5.01(j)) to 
which he or she is a party and to consummate the transactions contemplated 
hereby and thereby.

     (b) Horizon is a corporation duly incorporated and validly existing 
under the laws of the State of Tennessee and is duly licensed or qualified as 
a foreign corporation and is in good standing in each other jurisdiction in 
which it owns or leases any real property or in which the nature of business 
transaction by it makes such licensing or qualification necessary. Horizon 
has the corporate power and authority to own and operate its properties and 
to carry on its business as currently conducted, to execute, deliver and 
perform this Agreement and the Other Agreements to 


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which it is a party and to consummate the transactions contemplated hereby 
and thereby.

     (c) Except as set forth on Schedule 2.01(c) Horizon does not own any 
shares of any corporation or other equity interest, either of record, 
beneficially or equitably, in any association, partnership, limited liability 
company, joint venture or other legal entity, or have any commitment to 
acquire any such interest or to make any loans or capital contributions to 
any such entity.

     (d) Annexed hereto as Schedule 2.01(d) is a list of all Horizon Ventures 
(each as hereinafter defined) setting forth the jurisdiction of its formation 
and the record and beneficial ownership of all equity interests in such 
entity. As used herein, the term "Horizon Venture" means any partnership, 
limited liability company, joint venture or other entity in which Horizon 
owns an equity interest.

     Each Horizon Venture is duly organized under the laws of the 
jurisdiction of its formation, validly existing and in good standing under 
the laws of such jurisdiction. Each Horizon Venture has the requisite power 
and authority, and the legal right, to own and operate its properties and to 
carry on its business as currently conducted, and to execute and deliver any 
of the Other Agreements to which it may be a party and to consummate the 
transactions contemplated thereby. Each Horizon Venture is duly qualified to 
do business and is in good standing in each jurisdiction in which the 
property owned, leased or operated by it or the nature of its business, as 
now being conducted, makes such qualification necessary. Except as set forth 
in Schedule 2.01(d), no Horizon Venture owns any shares of any corporation or 
any equity interest, either of record, beneficially or equitably, in any 
association, partnership, limited liability company, joint venture or other 
legal entity, or has any commitment to acquire any such interest or to make 
any loans or capital contributions to any such entity.

     SECTION 2.02 Authorization of Agreements, Etc. Except as set forth on 
Schedule 2.02 the execution and delivery by Sellers and Horizon of this 
Agreement and the Other Agreements to which it is a party, and the 
performance by Sellers and Horizon of their obligations hereunder and 
thereunder, have been duly authorized by all requisite corporate, shareholder 
and other entity action required on the part of each and will not violate any 
provision of law or any order of any court or other agency of government 
applicable to Sellers or Horizon, the Charter or By-laws of Horizon, or any 
provision of any indenture, agreement or other instrument to which Horizon or 
Sellers or any of their respective properties or assets is bound, or conflict 
with, result in a breach of, create any right of termination under or 
constitute (with due notice or lapse of time or both) a default under any 
such indenture, agreement or other instrument, or result in the creation

                                      7


or imposition of any lien, charge or encumbrance of any nature whatsoever 
upon any of the properties or assets of Horizon or Sellers or result in any 
suspension, revocation, impairment, forfeiture or nonrenewal of, or any 
requirement to obtain, any Governmental Permit (as hereinafter defined).

     SECTION 2.03  Validity.  This Agreement has been duly executed and 
delivered by Sellers and Horizon, and, subject to due execution by the 
Company, constitutes, and with the Other Agreements, when executed and 
delivered by Sellers and Horizon as contemplated hereby, subject to the due 
execution by the other parties thereto (other than Horizon or Sellers), will 
constitute, the legal, valid and binding obligations of Horizon and Sellers, 
enforceable against them in accordance with their respective terms, except as 
enforceability may be limited by bankruptcy or other laws affecting 
creditors' rights generally and limitations on the availability of equitable 
remedies.

     SECTION 2.04  Capitalization: Ownership of Capital Stock.

     (a)  As of the date hereof, the authorized capital stock of Horizon 
consists of One Thousand (1,000) shares of no par value Stock. One Hundred 
(100) shares of stock have been duly and validly issued and are outstanding 
and fully paid and non-assessable.

     (b)  The Shares are owned by Sellers free and clear of all liens, 
charges, security interests or other encumbrances of any nature whatsoever 
("Encumbrances"). All right, title and interest in and to the Shares is being 
sold, assigned, transferred and delivered to the Company, and the Company 
will receive valid title thereto, free and clear of any and all Encumbrances.

     (c)  Except as otherwise set forth in Schedule 2.04(c) hereto (i) no 
subscription, warrant, option, convertible security or other right 
(contingent or other) to purchase or acquire any shares of any class of 
capital stock of Horizon is authorized or outstanding, (ii) there is not any 
commitment of Horizon to issue any shares, warrants, options or other such 
rights or to distribute to holders of any class of its capital stock any 
evidences of indebtedness or assets, and (iii) Horizon has no obligation 
(contingent or other to purchase, redeem or otherwise acquire any shares of 
its capital stock or any interest therein or to pay any dividend or make any 
other distribution in respect thereof.

     SECTION 2.05  Financial Statements.  Horizon has previously delivered to 
Company (i) audited financial statements for Horizon as of and for the years 
ending December 31, 1995 and December 31, 1996, and (ii) unaudited financial 
statements for Horizon as of, and for the three month period ended March 31, 
1997 (collectively, with the reports thereon included therewith, the 
"Financial Statements"). The Financial Statements (i) were prepared from the


                                       8



books and records of Horizon, and (ii) except as otherwise set forth in 
Schedule 2.05 present fairly the financial position of Horizon as of the 
respective dates specified therein, and the income, cash flows and 
stockholders' equity for the respective periods then ended, all in conformity 
with generally accepted accounting principles applied on a consistent basis. 
Except as set forth in Schedule 2.05, since March 31, 1997, there has been no 
material adverse change in the business, operations, properties or condition 
(financial or other) of Horizon.

     SECTION 2.06  Absence of Undisclosed Liabilities.  Except as and to the 
extent (i) reflected in the most recent balance sheet included in the 
financial statements referred to in Section 2.05 hereof, (ii) incurred by 
Horizon since the date of such balance sheet in the ordinary course of 
business and consistent with past practice, or (iii) set forth in Schedule 
2.06 hereto, Horizon has not incurred any material liabilities or obligations 
of any kind or nature, whether known or unknown or secured or unsecured 
(whether absolute, accrued, contingent or otherwise, and whether due or to 
become due), of a nature customarily accrued, reserved against or disclosed 
in a corporate balance sheet prepared in accordance with generally accepted 
accounting principles, including without limitation any and all tax 
liabilities due or to become due, whether incurred in respect of or measured 
by the assets, income or receipts of Horizon for any period prior to the 
close of business on May 31, 1997, or arising out of transactions entered 
into or any state of facts existing prior thereto or transactions 
contemplated by this Agreement.

     SECTION 2.07  Absence of Certain Changes or Events.  Since the date of 
its most recent balance sheet referred to in Section 2.05 (the "Interim 
Balance Sheet Date"). except (i) as otherwise set forth in Schedule 2.07 
hereto, (ii) as otherwise expressly contemplated in this Agreement, or (iii) 
as disclosed in the materials accompanying the Estimated Closing Balance 
Sheet, Horizon has not.

     (a)  changed or amended its Charter or By-laws;

     (b)  borrowed any amount or incurred any material obligation or 
liability (absolute or contingent), that would be required to be disclosed on 
a balance sheet as of the date hereof prepared in accordance with generally 
accepted accounting principles, except current liabilities incurred, and 
liabilities under contracts entered into, in the ordinary course of business 
and consistent with past practice;

     (c)  discharged or satisfied any lien, security interest, charge or 
other encumbrance or incurred or paid any obligation or liability (absolute 
or contingent), other than current liabilities shown on such balance sheet 
and current liabilities incurred since


                                       9



that date in the ordinary course of business and consistent with the past 
practice;

     (d)  mortgaged, pledged or subjected to any lien, security interest, 
charge or other encumbrance any of its assets or properties (other than 
Permitted LIens as defined in Section 2.09 below);

     (e)  sold, transferred, assigned, leased or otherwise disposed of any of 
its material assets or properties, except for fair consideration in the 
ordinary course of business and consistent with past practice, or acquired 
any assets or properties, except in the ordinary course of business and 
consistent with past practice;

     (f)  declared, set aside or paid any distribution (whether in cash, 
stock or property or any combination thereof) in respect of its capital stock 
or redeemed or otherwise acquired any of its capital stock or split, combined 
or otherwise similarly changed its capital stock or authorized the creation 
or issuance of or issued or sold any capital stock or any securities or 
obligations convertible into or exchangeable therefor, or given any person 
any right to acquire any capital stock of such member, or agreed to take any 
such action;

     (g)  made any distribution (whether in cash or property or any 
combination thereof and whether in redemption or liquidation of an interest 
or otherwise) to any person other than as permitted hereunder;

     (h)  made any investment of a capital nature, whether by purchase of 
stock or securities, contributions to capital, property transfers or 
otherwise, in any partnership, limited liability company, corporation or 
other entity, or purchased any material property or assets;

     (i)  canceled or compromised any debt or claim other than in the 
ordinary course of business consistent with past practice;

     (j)  waived or released any rights of material value, including without 
limitation, any Intangible Rights (as defined in Section 2.10(b) below);

     (k)  transferred or granted any rights under or with respect to any 
Intangible Rights, or permitted any license, permit or other form of 
authorization relating to an Intangible Right to lapse;

     (l)  made or granted any wage or salary increase applicable to any group 
or classification of employees generally, entered into any employment 
contract with, made any loan to, or entered into any material transaction of 
any other nature with, any officer or employee of Horizon;

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     (m) suffered any casualty loss or damage (whether or not such loss or 
damage shall have been covered by insurance) which affects in any material 
respect its ability to conduct its business;

     (n) suffered any material losses, or waived any rights of substantial 
value, whether or not in the ordinary course of business;

     (o) received notification of cancellation, or cancelled or waived any 
rights which, individually or in the aggregate, are material with respect to 
any currently existing agreement, contract, right or understanding to which 
Horizon is a party; or 

     (p) entered into any transaction except in the ordinary course of 
business; or conducted the business of Horizon in any manner other than the 
ordinary course of business consistent with past practices, including without 
limitation, maintenance of inventory levels, collection of third party 
accounts receivable and payments of accounts payable.

     (q) suffered any other change, event, or condition which, in any case or 
in the aggregate, has had or is reasonably expected to have a material 
adverse effect on its condition (financial or otherwise), properties, assets, 
liabilities, operations, business or prospects.

     Notwithstanding these restrictions, Horizon may have made cash 
disbursements outside the ordinary course of business provided that the 
minimum financial requirements set out in Sections 5.01(e) and (m) are 
satisfied on the Closing Date, after giving effect to the adjustment 
provisions of Section 1.03 above.

     SECTION 2.08 Governmental Approvals. Except as set forth in Schedule 
2.08 hereto and other than pursuant to the Hart-Scott-Rodino Antitrust 
Improvements Act of 1976, as amended from time to time (the 
"Hart-Scott-Rodino Act"), if applicable, no order, authorization, approval, 
license or consent from, or filing with, any federal or state governmental or 
public body or other authority having jurisdiction over Sellers or Horizon, 
(i) is required for the execution, delivery and performance of this Agreement 
or any of the Other Agreements, (ii) is required for the consummation of the 
transactions contemplated hereby and thereby, (iii) is necessary in order to 
ensure the legality, validity, binding effect or enforceability of this 
Agreement or any of the Other Agreements to which Sellers or Horizon is a 
party.

     SECTION 2.09 Title to Properties, Absence of Liens and Encumbrances. 
Horizon does not own any real property. Horizon has (or upon consummation of 
the transactions to occur on the Closing Date pursuant to Section 1.10, will 
have) good and valid title to all its other assets and properties, in each 
case free and clear of all Encumbrances, other than (w) as set forth in 
Schedule 2.09, (x)


                                  11



liens for taxes not yet due or, if due, being contested in good faith by 
appropriate proceedings, or (y) mechanics', materialmen's, landlord's and 
similar statutory liens arising in the ordinary course of business, or 
(z) liens, pledges or deposits under workers' compensation, unemployment 
insurance, social security or similar legislation, and all of which, in the 
aggregate, would not have a material adverse effect on the business, 
properties or condition (financial or other) of Horizon (a "Material Adverse 
Effect") (the liens described in clauses (w), (x), (y) and (z) above, 
together with liens that are released at or before Closing, being referred to 
herein as "Permitted Liens").

     SECTION 2.10  List of Properties, Contracts and Other Data. Attached 
hereto as Schedule 2.10 is a list setting forth the following:

     (a)  a description of all leases of real or personal property to which 
Horizon is a party, either as lessee or lessor, including a description of 
the parties to each such lease, the property to which each such lease 
relates, and the rental term and monthly (or other) rents payable under each 
such lease;

     (b)  (i) all patents, trademarks and trade names, business names, 
trademark and trade name registrations, logos, service mark registrations, 
copyright registrations, trade secrets and all other material proprietary 
rights other than such rights relating to Software (as hereinafter defined) 
set forth in Schedule 2.13 hereto (collectively, "Intangible Rights") owned 
by Horizon (specifying the nature of the rights therein), and (ii) all 
licenses granted by or to Horizon and all other material agreements to which 
Horizon is a party that relate, in whole or in part, to any Intangible Rights 
mentioned in clause (i) above or to other proprietary rights material to 
Horizon, whether owned by Horizon or otherwise;

     (c)  all collective bargaining agreements, employment and consulting 
agreements, independent contractor agreements (other than such agreements 
entered into in the ordinary course of business and which are terminable 
without penalty upon not more than 30 days notice), executive compensation 
plans, bonus plans, deferred compensation agreements, severance obligations, 
employee pension plans or retirement plans, employee profit sharing plans, 
employee stock purchase and stock option plans, group life insurance, 
hospitalization insurance or other similar plans or arrangements maintained 
for or providing benefits to employees of, or independent contractors or 
other agents for, Horizon; and

     (d)  all contracts, including without limitation guarantees, mortgages, 
indentures and loan agreements, to which Horizon is a party, or to which 
Horizon or any of its assets or properties is subject and which are not 
specifically referred to in clauses (a), (b), or (c) above, provided however, 
that there need not be listed in said Schedule 2.10 pursuant to this clause 
(d) any sales


                                       12


contracts, supply contracts with suppliers and other such contracts incurred 
in the ordinary course of business and consistent with past practice, other 
than any such contract which (i) is a contract or group of related contracts 
which exceeds $10,000.00 in amount, (ii) contains warranties by Horizon in 
excess of those customary in its business, or (iii) cannot be performed in 
the normal course within 12 months after the Closing Date without breach or 
penalty.

     True and complete copies of all documents and complete descriptions of 
all binding oral commitments (if any) referred to in said Schedule 2.10 have 
been made available to the Company and its counsel.  All material provisions 
of the contracts referred to in such Schedule are valid and enforceable 
obligations of Horizon, and, to the knowledge of Sellers of the other parties 
thereto.  As used in this Agreement, "to the knowledge of Sellers" or any 
similar phrase shall in regard to Martz mean, include and refer to such 
knowledge as:  (i) is actually possessed by Martz, or (ii) which should be 
known to Martz through the exercise of reasonable diligence.  Martz is deemed 
to have knowledge of information contained in the books and records of 
Horizon and any information actually known to any director of Horizon or Kyle 
Callahan, Vice President; Donna Ligda, Vice President; David Price, Chief 
Financial Officer; Deborah Rogers, Manager of Administrative Services; Roger 
Bryan, Manager of Purchasing and Inventory; Carolyn Eaton, Director of 
Pharmacy and Reimbursement; the two Regional Sales Managers of Horizon and 
Nona Eastman, the former Controller.  As used in this Agreement "to the 
knowledge of Sellers", or any similar phrase shall in regard to Charlton, 
mean, include and refer to such knowledge as is actually possessed by 
Charlton.  Except as set forth in Schedule 2.10, neither Sellers nor Horizon 
has been notified of any claim that any contract referred to in such Schedule 
is not valid and enforceable in accordance with its terms for the periods 
stated therein, or that there is under any such contract any existing 
material default or event of default or event which, with notice or lapse of 
time or both, would constitute such a default.

     SECTION 2.11  Third Party Payer and Supplier Contracts.  Except as set 
forth in Schedule 2.11, Horizon has not lost any customer, third-party payer 
or drug supplier contract since March 31, 1997, or suffered any diminution in 
its relationship with any third party payer since that date, and, to the 
knowledge of Sellers and, Sellers have received no express indication that 
any specific customer, third-party payer or drug supplier intends to cease 
doing business with Horizon in the event of a sale or change of ownership of 
Horizon.

     SECTION 2.12  Intangible Rights.  Except as set forth in Schedule 2.12 
(i) there are no outstanding options, licenses or agreements of any kind 
relating to the Intangible Rights, and Horizon is in compliance with its 
material contractual obligations relating to the protection of such of the 
Intangible Rights used by

                                   13



it pursuant to licenses or other contracts, (ii) Horizon owns or has the 
right to use its Intangible Rights to provide and sell the goods and services 
provided and sold by it, and to conduct its business as heretofore conducted, 
and the consummation of the transactions contemplated hereby will not alter 
or impair its ownership or right to use any such Intangible Rights, (iii) the 
use of said Intangible Rights by Horizon is without infringement of the 
rights of others, and no claims are currently being asserted with respect to 
the use by Horizon of any of the Intangible Rights for patent, copyright or 
trademark infringement, and (iv) to the knowledge of Sellers, no person is 
infringing on or violating the Intangible Rights or know-how owned by Horizon.

     To the knowledge of Sellers, no Horizon employee is obligated under any 
contract (including licenses, covenants or commitments of any nature) or 
other agreement, or subject to any judgment, decree or order of any court or 
administrative agency, that would conflict with his or her obligation to use 
his best efforts to promote the interest of Horizon or that would conflict 
with the business of Horizon now conducted. Neither the execution and 
delivery of this Agreement nor the carrying on of the business of Horizon by 
the employees of Horizon, will conflict with or result in a breach of the 
terms, conditions or provisions of, or constitute a default under, any 
contract, covenant or instrument under which any of such employees is now 
obligated.

     SECTION 2.13 Software. The operating and applications computer software 
programs and databases used by Horizon in the conduct of its business 
(collectively, the "Software") are listed on Schedule 2.13 hereto. Except as 
set forth in Schedule 2.13 hereto, Horizon holds valid licenses to all copies 
of such Software material to its business, and has not sold, licensed, leased 
or otherwise transferred or granted any interest or rights to any thereof. 
Except as set forth in Schedule 2.13 hereto, none of the Software owned by 
Horizon infringes upon or violates any patent, copyright, trade secret or 
other proprietary right of any other person and no claim with respect to any 
such infringement or violation is threatened. 

     Upon consummation of the transactions contemplated by this Agreement, 
Horizon will continue to own all the Software owned by it and material to its 
business, free and clear of all claims, liens, encumbrances, obligations and 
liabilities (other than Permitted Liens) and, with respect to all agreements 
for the lease or license of Software which require consent or other actions 
as a result of the consummation of the transactions contemplated by this 
Agreement in order for Horizon to continue to use and operate such Software 
after the Closing Date, Horizon will have obtained such consents or taken 
such other actions so required except where the failure to obtain such 
consent would not have a Material Adverse Effect on Horizon.


                                   14



     SECTION 2.14   Litigation.

     (a)  Schedule 2.14 hereto sets forth a complete list and an accurate 
description of all claims, actions, suits, proceedings and investigations 
pending or, to the knowledge of Sellers, threatened, by or against Horizon or 
any of its properties, assets, rights, or businesses. No such pending 
threatened claims, actions, suits, proceedings or investigations, if adversely 
determined, would individually or in the aggregate, have a Material Adverse 
Effect.

     (b)  There are no actions, suits, proceedings or claims pending before 
or by any court, arbitrator, regulatory authority or government agency 
against or affecting Sellers or Horizon that might enjoin or prevent the 
consummation of the transactions contemplated by this Agreement or the Other 
Agreements to which Sellers or Horizon is a party.

     SECTION 2.15   Taxes.

     (a) Except as set forth in Schedule 2.15, (i) Horizon has duly and timely 
filed or caused to be filed all tax returns, reports, estimates and 
information and other statements or returns (collectively, "Tax Returns"), of 
which the failure to file would have a Material Adverse Effect on Horizon, 
required to be filed by or on behalf of its (and all such Tax Returns with 
respect to which Horizon or its assets and properties may be liable or 
otherwise subject), pursuant to any applicable federal, state, and local tax 
laws for all years and periods for which such Tax Returns have become due 
(with extensions) as of the date hereof, and (ii) all such Tax Returns 
(including all informational Tax Returns) were true, correct and complete in 
all material respects as filed and correctly reflect in all material respects 
the Tax or Taxes required to be paid or collected by Horizon.

     (b)   For purposes of this Agreement, "Tax" and "Taxes" shall mean any 
net income, unincorporated business, alternative or add-on minimum tax, gross 
income, gross receipts, sales, use, ad valorem, value added, prescription, 
transfer, gains, franchise, profits, withholding on amounts paid or received, 
payroll, employment, excise, severance, stamp, occupation, property, windfall 
profit or other taxes, or other like assessments or charges of any kind 
whatsoever, together with any interest or any penalty, addition to tax or 
additional amount imposed by any governmental authority (domestic or foreign) 
responsible for the imposition of any such taxes.

     (c)   Except as set forth in Schedule 2.15, (i) Horizon has paid all 
Taxes shown as owed by it on the Tax Returns referred to in Section 2.15(a) 
to the appropriate taxing authorities, or where payments of Taxes is not yet 
due, has established or will establish an adequate reserve on its books and 
records for the payment of all such Taxes with respect to all taxable periods 
(or portions



                                       15


thereof) through the Closing Date, and (ii) Horizon has not been the subject 
of a tax ruling (or made a request therefor) or entered into any closing 
agreement under Section 7121 of the Code, which ruling or closing agreement 
has a material adverse effect on the Taxes of Horizon on or after the Closing 
Date.

     (d) Except as set forth in Schedule 2.15, (i) no extensions of time have 
been granted to Horizon to file any Tax Return required by applicable law to 
be filed by it or on its behalf on or prior to the Closing Date which have 
expired, or will expire, on or before the Closing Date without such tax 
Return having been filed, (ii) no deficiency or adjustment for any Taxes has 
been proposed, asserted or assessed against Horizon, and no federal, state 
or local audits or other administrative proceedings or court proceedings are 
pending with regard to any such Taxes, (iii) there is no pending or, to the 
knowledge of Sellers, threatened dispute or claim concerning any Taxes of 
Horizon with respect to any taxable period, or portion thereof ending on or 
prior to the Closing Date, (iv) no waiver or consent extending any statute 
of limitations for the assessment or collection of any Taxes has been 
executed by or on behalf of Horizon, nor are any requests for such waivers or 
consents pending, and (v) no federal income tax returns of Horizon for any 
year have been examined by the Internal Revenue Service.

     (e) Each Horizon Venture that is a partnership, for all taxable periods 
(and any portions thereof) from its respective date of organization through 
the Closing Date, has been taxable as a partnership, and not as an 
association taxable as a corporation, for federal, state and local income Tax 
purposes.

     (f) Except as set forth in Schedule 2.15, Horizon is not a party to any 
tax-sharing or allocation agreement that will survive the Closing Date, nor 
does Horizon owe any amount to any entity under any tax-sharing or allocation 
agreement.

     (g) Except as set forth in Schedule 2.15, Horizon is not a party to any 
agreement, contract or arrangement that would result, by reason of the 
consummation of any of the transactions contemplated herein, separately or in 
the aggregate in the payment of any "excess parachute payment" within the 
meaning of Section 280G of the Code. 

     (h) Horizon (i) has not been a member of an affiliated group filing a 
consolidated federal income Tax Return, nor (ii) has any liability for the 
Taxes of any person under Treasury Regulation Section 1.1502-6 (or any 
similar provision of state or local law), as a transferee or successor, by 
contract, or otherwise.

     (i) Except as set forth in Schedule 2.15, the books and records of 
Horizon made available for review by the Company and its representatives 
provide information adequate to determine: (i) the

                                       16




basis of Horizon in each of its assets; (ii) the basis of Sellers in the 
stock immediately preceding Closing (or the amount of any "excess loss 
account" pursuant to applicable Treasury Regulations under Section 1502 of 
the Code); and (iii) the amount of any net operating loss, net capital loss, 
or unused investment or other credit with respect to Horizon.

     (j) Since incorporation of Horizon, Sellers have filed all elections 
necessary for Horizon to be taxed as a Subchapter S Corporation and Horizon 
has been recognized as a Subchapter S Corporation by the Internal Revenue 
Service and Sellers know of no basis for any challenge to the status of 
Horizon as a Subchapter S Corporation.

     SECTION 2.16 Governmental Authorizations and Regulations.

     (a) Except as set forth in Schedule 2.16 hereto, Horizon has all 
material governmental licenses, franchises and permits, including without 
limitation all licenses, franchises, permits, accreditations, certificates of 
need and provider or supplier agreements as may be required under Titles 
XVIII and XIX of the Social Security Act and other applicable laws for 
reimbursement of services rendered or goods sold, or required under 
applicable federal or state laws and regulations for the conduct of its 
business as currently conducted (collectively, "Governmental Permits"), and

     (b) Horizon has at all times conducted its business in compliance with 
all applicable laws, ordinances, rules and regulations of all governmental 
authorities relating to its properties or applicable to its businesses, 
including without limitation the terms of all Governmental Permits and 
federal securities laws, other than minor non-compliance that has not and 
will not adversely affect the business of Horizon as it is currently 
conducted. Except as set forth in Schedule 2.16 hereto, Horizon is not in 
violation of any law, regulation or rule of any foreign, federal, state, 
municipal or other government, governmental department, commission board, 
bureau, agency or instrumentality other than such violations that have not 
and will not adversely affect the business of Horizon as it is currently 
conducted.

     (c) Except as set forth in Schedule 2.16, neither Horizon nor any of its 
properties, operations or businesses is subject to any order, judgment, 
injunction or decree to which Horizon is a party or which names Horizon. To 
the knowledge of Sellers, (i) no action has been taken or recommended by any 
governmental or regulatory official, body or authority, either to revoke, 
withdraw or suspend any certificate of need or any license to operate Horizon 
or to terminate or decertify any participation of Horizon in the Medicare, 
Medicaid or CHAMPUS programs, nor (ii) is there any


                              17



decision not to renew any Medicare, Medicaid or CHAMPUS provider or supplier 
agreement related to Horizon.

     (d)  Listed on Schedule 2.16 are all licenses and Government Payor 
Provider Numbers held by Horizon.

     SECTION 2.17  Labor Matters.

     (a)  No collective bargaining agreement is applicable to any employees 
of Horizon.  There are not any disputes between Horizon and any such 
employees that could reasonably be expected to materially adversely affect 
the conduct of its business or any unresolved labor union grievances or 
unfair labor practice or labor arbitration proceedings pending, or 
threatened, relating to the business of Horizon.  There are not any 
organizational efforts presently being made or threatened involving any of 
such employees.  Except as set forth in Schedule 2.17 hereto, Horizon has 
fully complied with all laws relating to employment, including any provisions 
thereof relating to wages, hours, collective bargaining, the payment of 
social security and other payroll or similar taxes, equal employment 
opportunity, employment discrimination or harassment and employment safety, 
and Horizon is not liable for any arrears of wages or any taxes or penalties 
for failure to comply with any of the foregoing.

     (b)  There are no proceedings pending or, to the knowledge of Sellers or 
Horizon, threatened before the National Labor Relations Board with respect to 
any employees of Horizon.  Except as set forth in Schedule 2.17 hereto, there 
are no discrimination or harassment charges (relating to sex, age, religion, 
race, national origin, ethnicity, handicap or veteran status) pending before 
any federal or state agency or authority against Horizon.

     SECTION 2.18  Use of Real Property.  The leased real properties listed 
in Schedule 2.18 hereto are the only properties occupied by Horizon and are 
used and operated by Horizon in material compliance and conformity with all 
applicable leases.

     SECTION 2.19  Condition of Assets.  All items of tangible personal 
property, fixtures and equipment comprising the assets of Horizon and 
necessary to the conduct of its businesses are in a good state of repair 
(ordinary wear and tear excepted) and operating condition, in all material 
respects.

     SECTION 2.20  Accounts Receivable.  Except as set forth in schedule 
2.20, the accounts receivable reflected in the most recent balance sheet for 
Horizon, separately included in the financial statements referred to in 
Section 2.05 hereof, and all accounts receivable arising between March 31, 
1997 and the date hereof, arose from bona fide transactions in the ordinary 
course of business.  Except as set forth in Schedule 2.20, the accounts 
receivable reflected on such balance sheet, have been recorded and

                                      18



reserved against in accordance with generally accepted accounting principles 
consistently applied and consistent with past practice. Except as set forth 
in Schedule 2.09, no such account receivable has been assigned or pledged to 
any other person, firm or corporation or, to the knowledge of the Sellers, is 
subject to any right of set-off. Except as set forth in Schedule 2.20, 
adequate provision has been made in the Financial Statements for collection 
losses, contractual discounts and other adjustments from third party payers. 
Except as set forth on Schedule 2.20, Horizon has not claimed or received 
reimbursements from the Medicare program, the Medicaid program or any other 
third-party payer in excess of the amounts permitted by law, except as and to 
the extent that such liability for such overpayment has already been 
disclosed in Section 4.01(d), satisfied or for which adequate provision has 
been made in the Financial Statements.

     SECTION 2.21  Books and Records. The books and records of Horizon, 
including without limitation, the books of account, minute books, stock 
certificate books and stock ledgers, are complete and correct in all 
respects and there have been no transactions involving Horizon which properly 
should have been set forth therein and which have not been so set forth.

     SECTION 2.22  Employee Benefit Plans

     (a)  Schedule 2.22 attached hereto lists each employee benefit plan 
within the meaning of Section 3(3) of the Employee Retirement Income Security 
Act of 1974 ("ERISA") maintained by Horizon (the "Plans" or "Plan"). Horizon 
has complied and currently is in compliance in all material respects, both as 
to form and operation, with the applicable provisions of ERISA and the 
Internal Revenue Code of 1986, as amended, ("Code") with respect to each of 
the Plans.

     (b)  With respect to each of the Plans which is intended to qualify 
under Section 401(a) of the Code, Horizon has received favorable and 
unrevoked determination letters from the Internal Revenue Service to the 
effect that such Plan does so qualify and that the related trust is exempt 
from taxation pursuant to Section 502(a) of the Code.

     (c)  Horizon has not at any time maintained, adopted, or established, 
contributed to or been required to contribute to, or otherwise participated 
in or been required to participate in, any employee benefit plan or other 
program or arrangement subject to Title IV of ERISA (including, without 
limitation, a "Multiemployer plan" (as defined in Section 3(37) of ERISA) and 
a defined benefit plan (as defined in Section 3(35) of ERISA)).

     (d)  Except as set forth on Schedule 2.22 hereto, and notwithstanding 
anything else set forth herein, Horizon has not incurred any liability with 
respect to any Plan under ERISA


                                       19




(including, without limitation, Title I or Title IV of ERISA), the Code or 
other applicable law, which has not been satisfied in full on a timely basis, 
and no event has occurred, and there exists no condition or set of 
circumstances which could reasonably be anticipated to result in the 
imposition of any material liability under ERISA (including, without 
limitation, Title I or Title IV of ERISA), the Code or other applicable law 
with respect to any of the Plans.

     (e)  No Plan, other than a Plan which is an employee pension benefit 
plan (within the meaning of Section 3(2)(A) of ERISA), provides benefits, 
including without limitation, death, health or medical benefits (whether or 
not insured), with respect to current or former employees of Horizon beyond 
their retirement or other termination of service with Horizon (other than (i) 
coverage mandated by applicable law, (ii) deferred compensation benefits 
accrued as liabilities on the books of Horizon, (iii) benefits the full cost 
of which is borne by the current or former employee (or his beneficiary)).

     (f)  Except as set forth on Schedule 2.22, the consummation of the 
transactions contemplated by this Agreement will not (i) entitle any current 
or former employee or officer of Horizon to severance pay, unemployment 
compensation or any other payment, or (ii) accelerate the time of payment or 
vesting, or increase the amount of compensation due any such employee or 
officer.

     (g)  As a result of the transactions contemplated hereby, no portion of 
any amount paid or payable by Horizon to a "disqualified individual" (within 
the meaning of Section 280G(c) of the Code and the regulations promulgated 
thereunder), whether paid or payable in cash, securities or otherwise and 
whether considered alone or in conjunction with any other amount paid or 
payable to such a "disqualified individual", constitutes an "excess parachute 
payment" within the meaning of Section 280G(b) of the Code (without regard to 
subsection (b)(4) thereof) and the regulations promulgated thereunder.

     (h)  Horizon has provided to the Company true and complete copies of the 
following for each Plan:  (i) the Plan; (ii) summary plan description of the 
Plan; (iii) the trust agreement, insurance policy or other instruments 
relating to the funding of the Plan; (iv) the two most recent Annual Reports 
(Form 5500 series) and accompanying schedules filed with the Internal Revenue 
Service or United States Department of Labor with respect to the Plan; (v) 
the most recent unaudited financial statement for the Plan; (vi) the most 
recent actuarial report of the Plan; (vii) the policy of fiduciary liability 
insurance (and agreements related thereto) maintained in connection with the 
Plan; and (viii) the most recent determination letter issued by the Internal 
Revenue Service with respect to the Plan that is intended to qualify under 
Section 401(a) of the Code.

                                         20



     SECTION 2.23  Insurance. All policies of fire, liability (including 
product liability), workers' compensation, malpractice and professional 
liability and other forms of insurance providing insurance coverage to or for 
Horizon are listed in Schedule 2.23 hereto, and (i) Horizon is a named 
insured under such policies, (ii) all premiums with respect thereto covering 
all periods up to and including the Closing Date have been paid or accrued 
for, and (iii) no notice of cancellation or termination has been received 
with respect to any such policy. All such policies are in full force and 
effect and will remain in full force and effect to and including the Closing 
Date. All such policies are underwritten by the insurers listed in Schedule 
2.23 hereto, and are sufficient for all applicable requirements of law. 

      SECTION 2.24 Environmental  Matters: Medical Waste.

      (a)  For the purpose of this Section 2.24, the following terms shall 
have the following meanings:

           "Environmental Law" means any current federal, state or local 
     statute, law, ordinance, rule or regulation of the United States and any 
     other jurisdiction within the United States now effective and any order, 
     to which Horizon is a party or is otherwise directly bound, of the United 
     States or other jurisdiction within the United States now effective 
     relating to: (i) pollution or protection of the environment, including 
     natural resources; or (ii) exposure of person, including employees, to 
     Hazardous Substances;

           "Hazardous Substances" means any substance, whether liquid, solid 
     or gas (i) listed, identified or designated as hazardous or toxic under 
     any Environmental Law, (ii) which, applying criteria specified in any 
     Environmental Law, is hazardous or toxic, or (iii) the use or disposal 
     of which is regulated under Environmental Law.

     (b)  No Hazardous Substances have been, or have been threatened to be, 
discharged, released or emitted into the air, water, surface water, ground 
water, land surface or subsurface strata or placed, held, stored on or 
transported to or from the property of Horizon except in compliance in all 
material respects with Environmental Law and except for incidental release of 
Hazardous Substances in amount or concentrations which would not reasonably be 
expected to give rise to any claims or liabilities against Horizon under any 
Environmental Law.

     (c)  Horizon has not received any written notification from a 
governmental agency that there is any violation of any Environmental Law 
with respect to its business and properties and Horizon has not received any  
written notification from a governmental agency pursuant to Section 104, 106 
or 107 of the


                                      21


Comprehensive Environmental Response Compensation and Liability Act, as 
amended.

     (d)  Horizon is not in violation of or, the subject of, any 
investigation, inquiry or enforcement action by any governmental authority 
under the Medical Waste Tracking Act, 42 U.S.C. Section 6992 et seq., or any 
applicable state or local governmental statue, ordinance or regulation 
dealing with the disposal of medical wastes ("Medical Waste Laws"). Horizon 
has obtained and is in compliance with any permits related to medical waste 
disposal required by the Medical Waste Laws, and has taken reasonable steps 
to determine, and has determined, that all disposal of medical waste by it 
has been in compliance with the Medical Waste Laws.

     (e)  There are no Hazardous Substances on, in or under the property 
currently occupied by Horizon (or Sellers have fully disclosed to the Company 
in writing the existence, extent and nature of any hazardous substances which 
Horizon is legally authorized to maintain on, in or under the property or in 
connection therewith).

     (f)  Horizon and all property occupied by Horizon is in full compliance 
with, and Horizon has not incurred any liability under, federal, state or 
local Environmental Laws.

     SECTION 2.25  Related Party Transactions. Except as set forth in Schedule 
2.25 hereto, there are not existing arrangements or proposed transactions 
other than (a) any transactions contemplated by the Other Agreements (as 
hereinafter defined) (b) relating to such person's employment, or (c) entered 
into on an arms' length basis in the ordinary course of business between 
Horizon, and (i) any officer or director of Horizon or any member of the 
immediate family of any of the foregoing persons (such officers, directors 
and family members being hereinafter individually referred to as a "Related 
Party"), (iii) any business (corporate or otherwise) which a Related Party 
owns, or controls directly or indirectly, or in which a Related Party has an 
ownership interest, or (iv) between any Related party and any business 
(corporate or otherwise) with which Horizon regularly does business.

     SECTION 2.26  Places of Business.  Horizon has done business only as 
Horizon Health Systems, Inc. and Hemophilia Health Services, Inc. at any time 
during the six (6) year period immediately prior to Closing (including all 
predecessor or merged entities and all trade and assumed names). During the 
six (6) year period immediately prior to Closing, Horizon has conducted its 
business only at those offices and warehouses identified on Schedule 2.26, 
and maintains inventory only at those locations identified on Schedule 2.26.

     SECTION 2.27  Changes in Laws. To Sellers' actual knowledge (there are 
no pending changes in applicable law or regulations that

                                       22



would prevent Horizon from conducting its business in substantially the same 
manner as the business is currently conducted by Horizon which are not 
actually known to Company.

     SECTION 2.28  Contributions. Neither Horizon nor to the knowledge of 
Sellers any officer thereof has used any corporate funds for unlawful 
contributions, gifts, entertainment or other expenses relating to political 
activity or otherwise, or has made any direct or indirect unlawful payment to 
governmental officials or employees from the corporate funds or been 
reimbursed from corporate funds for any such payment, or is aware that any 
other person associated with or acting on behalf of Horizon has engaged in 
any such activities.

     SECTION 2.29  Controlled Substances. Horizon and its officers, 
directors, and employees and persons who provide professional services under 
agreements with Horizon have not, in connection with their activities 
directly or indirectly related to Horizon, engaged in any activities which 
are prohibited under the Federal Controlled Substances Act, 21 U.S.C. Section 
801 et seq. or the regulations promulgated pursuant to such statute or any 
related state or local statutes or regulations concerning the dispensing and 
sale of controlled substances.

     SECTION 2.30  Disclosure of Certain Financial Relationships. Schedule 
2.30 lists all material financial relationships (whether or not memorialized 
in a writing) that Horizon has had with a person known by Horizon to be a 
physician or an immediate family member of a physician since January 1, 1993. 
For purposes of this Section 2.30, the term "financial relationship" has the 
meaning set forth in 42 USC Section 1395nn. The operation of Horizon is in 
compliance with and does not otherwise violate the federal Medicare and 
Medicaid statutes regarding health professional self-referrals, 42 U.S.C. 
Section 1395nn and 42 U.S.C. Section 1396b, or the regulations promulgated 
pursuant to such statute, or similar state or local statutes or regulations.

     SECTIONS 2.31  Brokers' or Finders' Fees. Except for the financial 
advisory services provided to Sellers by Healthcare Capital Advisors and 
Price Consulting, LLC, all negotiations relative to this Agreement and the 
transactions contemplated hereby have been carried out by Sellers directly 
with the Company, without the intervention of any person on behalf of either 
Sellers or Horizon in such manner as to give rise to any claim by any person 
against Horizon or the Company for a finder's fee, brokerage commission or 
similar payment and all fees shall be satisfied by Sellers on the Closing 
Date as provided in Section 9.01 hereof.

     SECTION 2.32  Disclosure. Neither this Agreement, nor any exhibit 
hereto, nor any certificate or document furnished or to be furnished to 
Company by or on behalf of Sellers or Horizon, pursuant to, or in connection 
with, the transactions contemplated

                                       23




by this Agreement, when read together, contains, or will contain, any 
misstatement of a material fact or omits, or will omit, a material fact 
necessary to make the statements therein, in the light of the circumstances 
under which they were or will be made, not misleading.

      SECTION 2.33  Zoning.  The real property currently occupied by Horizon 
is not subject to any lien, encumbrance, easement, right of way, building or 
use restriction, reservation or limitation, ordinance, or other law, order or 
regulation which in any material respect would interfere with or impair the 
carrying out of the business of Horizon.

      Section 2.34  Ownership of Stock. To the actual knowledge of Sellers 
and unless actually known to Company, the ownership by Company of the stock 
in Horizon will not cause Horizon to be unable to conduct its business as 
proposed to be conducted in any of the states in which Horizon is now 
operating or proposes to operate because of any state or federal law, rule or 
administrative regulation.

     SECTION 2.35  Financial Interests. Except as set forth on Schedule 2.35 
hereto, the Sellers have no financial interest (whether as owner (of more 
than a 1% interest in the case of a publicly traded company), partner, 
officer, director, affiliate, employee or otherwise) in any person, firm or 
corporation which is, or during the past five years was, directly or 
indirectly, engaged in any business engaged in by Horizon; party to any 
agreement (other than this Agreement or any Other Agreement) to which Horizon 
is also a party; a lessor/lessee, supplier, distributor, sales agent, client, 
or customer engaged in transactions with Horizon; the owner of any tangible 
or intangible property used by Horizon in Horizon's business; or has or had a 
cause of action or claim whatsoever against, or owes any amount to, Horizon.

      Section 2.36  Absence of Certain Business Practices. Neither Horizon 
nor to the knowledge of Sellers, any officer, director, employee or agent of 
Horizon, nor to the knowledge of Sellers, any other person or entity acting 
on behalf of Horizon, acting alone or together, has (i) received, directly or 
indirectly, any rebates, payments, commissions, promotional allowances or any 
other economic benefits, regardless of their nature or type, from any 
customer, governmental employee or other person or entity with whom Horizon 
has done business directly or indirectly, or (ii) directly or indirectly, 
given or agreed to give any gift or similar benefit to any customer, 
governmental employee or other person or entity who is or may be in a 
position to help or hinder the business of Horizon (or assist Horizon in 
connection with any actual or proposed transactional) which, in the case of 
either clause (i) or clause (ii) above, would reasonably be expected to 
subject Horizon to any damage or penalty in any civil, criminal or 
governmental litigation or proceeding.

                                        24



      SECTION 2.37  Fraud and Abuse.  Neither Horizon nor, any officer, 
director, employee or agent of Horizon, nor any other person or entity known 
or authorized to be acting on behalf of Horizon, acting alone or together, 
have engaged in any activities which are prohibited under federal Medicare 
and Medicaid statutes, 42 U.S.C. Sections 1320a-7, 1320a-7a and 1320a-7b, the 
federal CHAMPUS statute, or the regulations promulgated pursuant to such 
statutes or related state or local statutes or regulations, including but not 
limited to the following:

      (a)  knowingly and willfully making or causing to be made a false 
statement or representation of a material fact in any application for any 
benefit or payment;

      (b)  knowingly and willfully making or causing to be made any false 
statement or representation of a material fact for use in determining rights 
to any benefit or payment;

      (c)  presenting or causing to be presented a claim for reimbursement 
for services that is for an item or service that was known or should have been 
known to be (i) not provided as claimed, or (ii) false or fraudulent;

      (d)  failing to disclose knowledge of the occurrence of any event 
affecting the initial or continued right to any benefit or payment on its own 
behalf or on behalf of another, with intent to fraudulently secure such 
benefit or payment;

      (e)  knowingly and willfully offering, paying, soliciting or receiving 
any renumeration (including any kickback, bribe, or rebate), directly or 
indirectly, overly or covertly, in cash or in kind (i) in return for 
referring an individual to a person for the furnishing or arranging for the 
furnishing of any item or service for which payment may be made in whole or 
in part by CHAMPUS, Medicare, Medicaid, or other state health care programs, 
or (ii) in return for purchasing, leasing, or ordering or arranging for or 
recommending purchasing, leasing, or ordering any good, facility, service, or 
item for which payment may be made in whole or in part by CHAMPUS, Medicare, 
Medicaid or other state health care programs; or

      (f) knowingly and willfully making or causing to be made or inducing or 
seeking to induce the making of any false statement or representation (or 
omit to state a fact required to be stated therein or necessary to make the 
statements contained therein not misleading) of a material fact with respect 
to (i) a facility in order that the facility may qualify for CHAMPUS, 
Medicare, Medicaid or other state health care program certification, or (ii) 
information required to be provided under 42 U.S.C. Section 1320a-3.

      SECTION 2.38  Charter and By-Laws.  Schedule 2.38 contains a true, 
complete and correct copy of the Charter and By-Laws of

                                           25





Horizon, including all amendments thereto, as currently in effect. The 
Charter of Horizon has been amended since the date of the last amendment 
contained in Schedule 2.38.

     SECTION 2.39   Insurance Coverage.  Except as set forth on Schedule 
2.39, since the incorporation of Horizon, Horizon has continuously maintained 
general professional liability (including product liability), insurance 
coverage on an occurrence basis, or on a claims made basis with tail coverage 
upon each change in carrier, at a level equal to or greater than that shown 
on the Certificate of Insurance attached hereto as Schedule 2.39.


                               ARTICLE III.

                REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to Sellers as follows:

     SECTION 3.01   Organization, Power, Etc.  The Company is a corporation 
duly incorporated, validly existing and in good standing under the laws of 
the State of Delaware. The Company has the corporate power and authority to 
execute and deliver this Agreement and the other Agreements to which it is a 
party, and to perform its obligations hereunder and thereunder.

     SECTION 3.02   Authorization of Agreements.  (a) The Company has duly 
approved this Agreement and all the Other Agreements to which the Company is 
to be a party, and has duly authorized the execution and delivery of this 
Agreement and the Other Agreements to which the Company is to be a party, and 
the consummation of the transactions contemplated hereby and thereby. Neither 
the execution and delivery by the Company of this Agreement or the Other 
Agreements to which the Company is to be a party, nor the consummation of the 
transactions contemplated hereby and thereby, will violate any provision of 
law, any order of any court or other agency of government, the Certificate of 
Incorporation or By-laws of the Company, or any judgement, award or decree or 
any indenture, agreement or other instrument to which the Company is a party, 
or by which it or any of its properties or assets is bound or affected, or 
result in a breach of or constitute (with due notice or lapse of time or 
both) a default under any such indenture, agreement or other instrument, or 
result in the creation or imposition of any lien, charge or encumbrance of 
any nature whatsoever upon any of the properties or assets of the Company.

     SECTION 3.03   Validity.  This Agreement has been duly executed and 
delivered by the Company, and, subject to due execution by the other parties 
thereto, constitutes, and the Other Agreements to which the Company is a 
party, when executed and delivered by the Company as contemplated hereby, 
subject to due execution by the 


                                       26



other parties thereto, will constitute, the legal, valid and binding 
obligations of the Company, enforceable against the Company in accordance 
with their respective terms, except as enforceability may be limited by 
bankruptcy or other laws affecting creditors' rights generally and 
limitations on the availability of equitable remedies.

     SECTION 3.04   Governmental Approvals. Other than pursuant to the 
Hart-Scott-Rodino Act, no order, authorization, approval or consent from or 
filing with, any federal or state governmental or public body or other 
authority having jurisdiction over the Company is required to be made or 
obtained by the Company for the execution, delivery and performance of this 
Agreement or is necessary in order to ensure the legality, validity, binding 
effect or enforceability of this Agreement or the Other Agreements to which 
the Company is a party.

     SECTION 3.05   Brokers' or Finders' Fees.  All negotiations relative to 
this Agreement and the transactions contemplated hereby have been carried out 
by the Company directly with the Sellers without the intervention of any 
person on behalf of the Company in such manner as to give rise to any claim 
by any person against the Sellers for a finder's fee, brokerage commission or 
similar payment.

     SECTION 3.06   Investment Representation.  The Company is acquiring the 
Stock for investment and not with a view to the distribution thereof.


                                   ARTICLE IV.

                                   COVENANTS

     SECTION 4.01   Certain Covenants of Sellers.

     (a)  Except for asset and liability transfers consistent with minimizing 
adjustments to the Purchase Price pursuant to Section 1.03 (d), during the 
period form the date of this Agreement to the Closing Date, Sellers will 
cause Horizon to (x) conduct its business and operations according to its 
ordinary course of business consistent with past practice, including without 
limitation the maintenance of inventory levels, the collection of third party 
accounts receivable and the payment of third party accounts payable, (y) use 
its best efforts to preserve its relationships with employees, customers and 
suppliers, and (z) continue to provide its services to customers. Without 
limiting the generality of the foregoing, during the period from the date of 
this Agreement to the Closing Date, Sellers will not permit Horizon to do any 
of the things listed in paragraphs (a) through (p) of Section 2.07, except as 
otherwise contemplated by this Agreement.



                                       27


     (b)  Between the date hereof and the Closing Date, Sellers shall provide 
reasonable access during normal business hours to the representatives of the 
Company, and their counsel and accountants, to the financial, accounting and 
legal records of Horizon, and, with the prior express written consent of 
Martz, Kyle Callahan, Sam Stumpf, Esq., Price Paschall or David Price, to key 
employees of Horizon designated by Company, and, in connection therewith, 
shall permit their respective representatives to visit the premises of 
Horizon.

     (c)  Unless otherwise contemplated by this Agreement, between the date 
hereof and the Closing Date, Sellers will not permit Horizon to enter into 
any transaction, make any agreement or commitment, or take any action, which 
they know would result in any of the representations, warranties or covenants 
of Sellers or Horizon contained in this Agreement not being true and correct 
in all material respects at and as of the time immediately after the 
occurrence of such transaction, event or action.

     (d)  Between the date hereof and the Closing Date, Sellers shall cause 
Horizon to consult with Company regarding the repayment of, and to make 
consistent diligent efforts to repay the Two Million Eight Hundred 
Forty-Seven Thousand Six Hundred Fifty-Two ($2,847,652.00) Dollars "refunds 
payable" amount reflected on Horizon's March 31, 1997 balance sheet ("Refunds 
Payable") and to obtain receipts and releases from the applicable third party 
payors, if in the reasonable judgment of Company and Horizon, such release 
and receipts are obtainable.

     (e)  Sellers hereby agree to take such further actions and execute such 
further documents as may, in the future, be reasonably requested by Company or 
horizon in order to carry out the obligations of Sellers hereunder and to 
confirm and further document the transactions contemplated herein.

     SECTION 4.02   Covenants of the Company

     (a)  Between the date hereof and until the consummation of the 
transaction contemplated by Section 1.01, the Company shall not enter into 
any transaction, make any agreement or commitment, or take or omit to take 
any action, which it knows would result in any of the representations or 
warranties of the Company contained in this Agreement not being true and 
correct in all material respects at and as of the time immediately after the 
occurrence of such transaction, event, action or omission.

     (b)  Company will cause Horizon to continue employment of all employees 
who currently are employed in the operations of Horizon for a period of three 
months after closing at their current levels of salaries and with a benefits 
program comparable to that offered by Company's affiliate, Nova Factor, Inc., 
subject however to said employees being terminated during that period for 
cause.


                                       28




Notwithstanding the foregoing provision, Sara Meyers will resign as an 
employee of Horizon and become an employee of Martz.

      (c) After the closing, (x) Company will cause Horizon to operate as a 
stand alone subsidiary of Company separate and apart from Nova Factor, Inc. 
and Southern Health Systems, Inc. (and will be so referred to in public 
statements, including, without limitation, public statements announcing the 
transaction effected under this Agreement); (y) Company will continue to 
utilize Horizon's name; and (z) Horizon will continue to operate Horizon's 
business in Nashville, Tennessee.  Further, the Company will cause the 
existing hemophilia patients of Nova Factor, Inc. which are serviced from 
Memphis, Tennessee to be serviced by Horizon as soon after Closing as can be 
accomplished in an orderly fashion, and will also use commercially reasonable 
efforts to consolidate in Nashville the hemophilia operations currently 
conducted by the Company's two (2) joint ventures in Texas and one joint 
venture in Florida.  The foregoing provisions shall remain in effect unless 
and to the extent the Board of Directors of the Company (by action of a 
majority of the entire Board including at least two members thereof who are 
not employees of Nova Factor) determine that, as a result of a change in the 
business or prospects of Horizon or a change in industry or regulatory 
conditions affecting Horizon or in order to effect a disposition of the stock 
of Horizon or the Company or of their respective assets or to effect a public 
offering of securities of Horizon or the Company or other financing 
transaction and after giving consideration to the impact such determination 
will have on the business methods and corporate culture of Horizon in effect 
on the date hereof, it is in the best interest of the Company to deviate from 
compliance with any portion of this Section 4.02(c). Notwithstanding the 
above, none of these provisions of this Section 4.02(c) shall be binding upon 
NationsBank of Tennessee, N.A., First Tennessee National Bank or any other 
Bank from time to time having a security interest in the Stock of Horizon as 
collateral for money borrowed and for any other obligations incident to such 
borrowing.

      (d) For so long as Kyle Callahan is President of Horizon, Horizon shall 
retain control over the process of paying Refunds Payable as defined in 
Section 4.01(d).  Horizon shall communicate with and consult with the Sellers 
with regard to all significant matters affecting such process.  If Kyle 
Callahan shall no longer serve as President of Horizon, Martz shall cause the 
law firm of Bass Berry & Sims, PLC, acting through its healthcare section, or 
such other law firm (the "Designated Law Firm")as Martz shall designate and 
Company shall approve, shall, on behalf of Martz, and at Sellers' cost, 
prepare a recommendation as to how to settle and resolve the Refunds Payable 
so that Horizon shall have no further liability for said Refunds Payable.  
Bass Berry & Sims, PLC or such Designated Law Firm shall submit its 
recommendations to Horizon for prior approval, such approval not to be 
unreasonably withheld or delayed.  Upon Horizon's approval, Horizon and Bass 
Berry & Sims,


                                      29





PLC or such Designated Law Firm, as applicable, shall implement such 
recommendation.

      SECTION 4.03  HART-SCOTT-RODINO ACT.  Each of the parties shall file 
any Notification and Report Forms and related material that it may be 
required to file with the Federal Trade Commission and the Antitrust 
Division of the United States Department of Justice under the 
Hart-Scott-Rodino Act, shall use its reasonable best efforts to obtain an 
early termination of the applicable waiting period, and shall make any 
further filings pursuant thereto that may be necessary, proper or advisable.

      SECTION 4.04  TAX MATTERS.

      (a) TRANSFER TAXES.  Any Tennessee transfer taxes incurred by Sellers 
in connection with the sale of the capital stock of Horizon to the Company 
pursuant to this Agreement shall be borne by Sellers.  Sellers shall prepare 
and file, at their own expense, all necessary tax returns and other 
documentation with respect to all such transfer taxes.

      (b)  TAX RETURNS.  (i)  Sellers shall prepare (or cause to be prepared) 
and Horizon shall timely file for all taxable periods ending on or before the 
Effective Date (a "Pre-Closing Period") all Tax Returns required to be filed 
after the Effective Date by or on behalf of Horizon (the "Pre-Closing Period 
Tax Returns").  The preparation of such Tax Returns and the positions taken 
thereon shall be consistent in all respects with Horizon's past tax 
accounting principles and practices.

      (ii)  The Company shall prepare and timely file (or cause to be 
prepared and timely filed) for all taxable periods beginning before and 
ending after the close of the Effective Date (a "Straddle Period"), all Tax 
Returns required to be filed after the Effective Date by Horizon. For 
purposes of this Agreement, the portion of the Straddle Period ending on and 
including the Effective Date shall be referred to as the "Pre-Closing 
Straddle Period" and the  portion of the Straddle Period beginning after the 
Effective Date shall be referred to as the "Post-Closing Straddle Period". 
Any such Taxes for a Straddle Period with respect to Horizon shall be 
apportioned to the Pre-Closing Straddle Period based on the actual operations 
of Horizon during the portion of such period ending on and including the 
Effective Date, determined as though Horizon's books closed at the close of 
the Effective Date.  The cost and expenses of preparing any Tax Returns for a 
Straddle Period shall be borne by the Company.

      (iii)  All Tax Returns referred to in Sections 4.04(b)(i) shall be 
subject to review and approval by the Company, and all Tax Returns referred 
to in Section 4.04(b)(ii) which affect the liability of Sellers for Taxes 
pursuant to this Agreement or otherwise shall be subject to review and 
approval by Sellers, in 


                                       30




each case prior to filing, and such approval shall not be unreasonably 
withheld or delayed by either such party.  The party charged with 
responsibility to prepare a Tax Return subject to review (the "Preparing 
Party") shall present such Tax Return to the other party (the "Reviewing 
Party") no less than fifty (50) days prior to the due date (including 
extensions) for filing the Tax Return.  The parties shall cooperate with one 
another by making available for review all related work papers and analyses 
utilized in preparing the Tax Return and all related books, records and 
personnel for  this purpose without cost.  Within fifteen (15) days after 
receipt of the Tax Return, the Reviewing Party shall communicate to the 
Preparing Party as to whether it concurs with the Tax Return or, if not, 
stating its exceptions thereto, together with the reasons and supporting 
information relating to such exceptions.  If there are no such exceptions or 
such exceptions are resolved by the parties, then such resolution shall be 
the final determination.  If such exceptions cannot be resolved by the 
parties within ten (10) business days after delivery of the list of 
exceptions, the dispute shall be submitted to an independent tax consultant 
who shall make a final determination in accordance with the terms of this 
Agreement within fifteen (15) days after submission to such independent tax 
consultant.  The independent tax consultant shall be one of the "Big Six" 
public accounting firms or a law firm with a nationally recognized tax 
practice with no material relationship to the parties or their affiliates, 
and such independent tax consultant shall be chosen by agreement of the 
parties, or if they are unable to agree, chosen by lot from an equal number 
of nominees submitted by each party.  The fees and  expenses of the 
independent tax consultant shall be allocated by it in inverse proportion to
the adjustment granted the Reviewing Party.  For example, if such tax 
consultant grants a portion of the exceptions proposed by the Reviewing Party 
that results in an adjustment to the amount of Taxes owed that is 25% of the 
total adjustment to the amount of Taxes owed that would have occurred had all 
of the Reviewing Party's proposed exceptions been granted, it shall assess 
the Reviewing Party with 75% of its fees and expenses.  The independent tax 
consultant's decision shall be final and binding upon, and non-appealable by, 
the parties.

      (c)  TAX PAYMENTS.  Sellers shall pay all Taxes with respect to all Tax 
Returns described in Section 4.04(b) attributable to Pre-Closing Period or 
apportioned to Pre-Closing Straddle Periods pursuant to Section 4.04 (b)(ii), 
to the extent not accrued for on the Final Closing Balance Sheet, ten (10) 
days prior to the respective due dates (excluding extensions or waivers 
thereof) for such Taxes or , if later, when the respective Tax Returns 
reporting such Taxes are filed, other than any Taxes payable (the "Excluded 
Taxes") as the result of any (i) events occurring on or after the Effective 
Date outside of the ordinary course of business, (ii) any increase in Taxes 
resulting from Horizon amending any Pre-Closing Tax Returns without the prior 
written permission of Sellers, and

                                       31




(iii)  Taxes which were previously paid though estimated Tax payments.

      (d)  REFUNDS.  The Company agrees to, and shall cause Horizon to, 
cooperate in obtaining any refunds of Taxes (other than any Excluded Taxes) 
for Pre-Closing Tax Returns and the Pre-Closing Straddle Periods and to 
promptly remit to Sellers any such refunds received by the Company, or 
Horizon net of any Taxes incurred by the Company, or Horizon provided that 
such refunds were not reflected on the Final Closing Balance Sheet.  Any 
reasonable out-of-pocket costs or expenses incurred by the Company or Horizon 
in obtaining such refunds shall be borne by Sellers.  In no event shall 
Sellers be entitled to file an amended return or otherwise make a claim for 
refund (or have such an amended return filed or such claim made on its 
behalf) without the prior approval of the Company (which approval shall not 
be unreasonably withheld) to the extent that such action would increase the 
Tax liability of the Company for any taxable period or portion thereof 
following the Effective Date.

      (e)  TAX CHARACTERIZATION.  Any payments made pursuant to (i) this 
Section 4.04, (ii) the indemnity provisions of Article VII or (iii) the 
purchase price adjustment provisions of this Agreement, shall be treated by 
each of the parties hereto as an adjustment to the purchase price paid by the 
Company for the Shares for all Tax and financial accounting purposes.  The 
parties hereto agree to account for the transactions contemplated herein in a 
manner consistent with all the provisions of this Agreement when filing their 
respective Tax Returns and the Tax Returns of Horizon.

      (f)  POST-CLOSING AUDITS AND OTHER PROCEEDINGS.  (i) Sellers, on the one 
hand, and Company on the other hand, each agree, at its own expense (except 
to the extent such expense, incurred to third parties, is subject to 
indemnification pursuant Section 7.02), to furnish or cause to be furnished 
to each other, upon request, as promptly as practicable, such information and 
assistance (including access to books and records) relating to Horizon as is 
reasonably necessary or is reasonably requested for the preparation of any 
return for Taxes, any claim for refund or any audit, and the prosecution or 
defense of any claim, suit or proceeding relation to any proposed adjustment.

      (ii) Sellers on the one hand, and the Company, on the other hand, each 
agree to give prompt notice to each other of any written inquiry by a Tax 
authority, scheduling of an examination or proposed adjustment with respect 
to Taxes for any Pre-Closing Period or any Pre-Closing Straddle period.  
Sellers and the Company shall cooperate with each other in the conduct of any 
Tax audit or other Tax proceedings involving Horizon for such periods and 
each participate at its own expense; provided, however, that Sellers shall 
have the right to control the conduct of any such audits or proceeding to  he 
extend such audits or proceedings relate to a

                                       32


proposed adjustment that could adversely affect the liability of Sellers for 
Taxes pursuant to this Agreement or otherwise.  The Company also may, at its 
own expense, be present in any such audit or proceeding and, if Sellers do 
not assume the defense of any such audit or proceeding, the Company may 
defend the same in such manner as it may deem appropriate, including, but not 
limited to, settling such audit or proceeding after giving thirty (30) days' 
prior written notice to Sellers setting forth the terms and conditions of 
settlement, provided that Sellers have not objected within fifteen (15) days 
of receipt of such notice and assumed control of the audit.  In the event 
that a potential adjustment is present in an audit or proceeding (otherwise 
controlled by the Sellers) for which the Company would be liable and not 
entitled to indemnification hereunder, the Company shall have the right, at 
its expense, to control the audit or proceeding with respect to such proposed 
adjustment.  With respect to a proposed adjustment which could adversely 
affect the liability of Sellers for Taxes pursuant to this Agreement or 
otherwise, on the one hand, and the liability of the Company for Taxes 
pursuant to this Agreement or otherwise, on the other hand, (i) Sellers and 
the Company each may participate in the audit or proceeding, and (ii) any 
issues with respect to the proposed adjustment or otherwise pertaining to the 
audit or proceeding shall be decided jointly by Sellers and the Company.  
Notwithstanding the foregoing provisions of this Section, the parties to this 
Agreement shall endeavor to agree on a joint representative or 
representatives in any proceeding in which each is entitled to and desires to 
be represented.

     (g)  338(h)(10) Election - All parties hereto agree that the Company's 
purchase of all of the issued and outstanding shares (consisting of 100 
shares of No Par Common Stock) of Horizon is a "qualified stock purchase" as 
defined in IRC section 338(d)(3).  The parties hereto also agree that this 
"qualified stock purchase" will be treated as a deemed asset sale pursuant to 
IRC Section 338(h)(10) and Treasury Reg. Section 1.338(h)(10)-1.  
Accordingly, the Sellers agree to cooperate in the joint filing (as required 
by Treasury Reg. Section 1.338(h)(10(-1(d)) of a Section 338(h)(10) election 
with Company as a condition to closing.

                                ARTICLE V.

                            CONDITIONS PRECEDENT

     SECTION 5.10  Conditions Precedent to the Obligations of the Company.  
The obligations of the Company to consummate the transactions contemplated by 
this Agreement on the Closing Date are subject, at the option of the Company, 
to the satisfaction at or prior to the Closing Date of each of the following 
conditions:

                                         33



     (a) Accuracy of Representations and Warranties. The representations and 
warranties of Sellers and Horizon contained in this Agreement, or in any 
certificate or document delivered to the Company pursuant hereto or thereto 
shall be true and correct in all material respects on and as of the Closing 
Date as though made at and as of that date except as to items which are 
specific as to time, and Sellers shall each have so certified to the Company 
in writing.

     (b) Compliance With Covenants. Sellers and Horizon shall have performed 
and complied in all material respects with all terms, agreements, covenants 
and conditions of this Agreement to be performed or complied with by them at 
or prior to the Closing Date and Sellers shall have so certified to the 
Company in writing.

     (c) No Material Adverse Change. Except for the transfer of assets and 
liabilities intended to minimize adjustments to the Purchase Price pursuant 
to Sections 1.03(d), on the Closing Date there shall not have been any 
material adverse change since March 31, 1997, (i) in the financial condition 
or results of operations of the business of Horizon or (ii) in the capacity 
of Horizon to conduct its business in a manner consistent with past practice, 
and Sellers shall have certified to such effect to the Company in writing.

     (d) Estimated Balance Sheet; Minimum Financial Requirements. The 
Estimated Balance Sheet shall have been delivered to the Company.

     (e) Outstanding Indebtedness. Except for external bank indebtedness in 
the principal amount not to exceed Two Million Five Hundred Thousand 
($2,500,000.00) Dollars Horizon shall not have any existing indebtedness for 
borrowed money to any party or any liability under any guaranty of any 
indebtedness of any party.

     (f) All Proceedings To Be Satisfactory. All proceedings to be taken by 
Sellers and Horizon in connection with the transactions contemplated hereby 
and all documents incident thereto shall be reasonably satisfactory in form 
and substance to the Company and its counsel. Armstrong Allen Prewitt Gentry 
Johnston & Holmes, and said counsel shall have received all such counterpart 
originals or certified or other copies of such documents as they may 
reasonably request.

     (g) Opinions of Counsel for Sellers. The Company shall have received the 
opinions of Bass Berry & Sims, PLC addressed to the Company and dated the 
Closing Date, satisfactory in form and substance to the Company and its 
counsel substantially in the form attached as Schedule 5.01(g)(1) hereto.

     (h) Consents and Approvals. All authorizations, consents, waivers and 
approvals required to be obtained by Horizon without


                                       34



which Horizon would not be able to conduct its business after the Closing 
Date in substantially the same manner as theretofore conducted shall have 
been duly obtained and shall be in form and substance reasonably satisfactory 
to counsel for the Company.

     (i)  Legal Actions or Proceedings. No legal action or proceeding shall 
have been instituted or threatened by any private party or by any 
governmental department, agency or authority, in either case seeking to 
restrain, prohibit, invalidate or otherwise affect the consummation of the 
transactions contemplated hereby or seeking damages or which would, if 
adversely decided, cause a Material Adverse Effect.


     (j)  Other Agreements. Each of the agreements listed in Schedule 5.01 
(collectively the "Other Agreements") shall have been duly executed and 
delivered by all parties thereto other than the Company.

     (k)  Antitrust Improvements Act. The waiting period under the 
Hart-Scott-Rodino Act, if applicable, shall have expired or been terminated.

     (l)  Supporting Documents. On or prior to the Closing Date, the Company 
and its counsel shall have received copies of the following supporting 
documents:

     (i)  (1)  the charter documents of Horizon, certified as of a recent 
     date by the Security of State of the State of Tennessee; and (2) a 
     certificate of the Secretary of State or other appropriate official of 
     the State of Tennessee as to the due incorporation and existence of such 
     corporation, and listing all documents on file with said official;

     (ii)  a certificate of the Secretary or an Assistant Secretary of 
     Horizon, dated the Closing Date and certifying (1) that attached thereto 
     is a true and complete copy of the Charter and By-laws of Horizon as in 
     effect on the date of such certification; (2) that the Charter of such 
     corporation has not been amended since the date of the last amendment 
     referred to in the certificate delivered pursuant to clause (i) (2) 
     above; (3) that attached thereto is a true and complete copy of the 
     resolutions adopted by the Board of Directors of such corporation, 
     authorizing the execution, delivery and performance of this Agreement 
     and the Other Agreements to which such corporation is a party and the 
     consummation of the transactions contemplated hereby and thereby; and 
     (4) as to the incumbency and specimen signature of each officer of 
     Horizon executing this Agreement, any Other Agreement, and any 
     certificate or instrument furnished pursuant hereto, and a certification 
     by another officer of said corporation as to the incumbency and 
     signature of the officer signing the certificate referred to in this 
     paragraph (ii); and

                               35




     (iii) such additional supporting documents and other information with 
respect to the operations and affairs of Horizon as the Company or its 
counsel may reasonably request.

     All such documents shall be reasonably satisfactory in form and substance 
to the Company and its counsel.

     (m) Bonus. The $450,000.00 accrued payable to Ms. Dianne Martz for the 
1996 bonus shall be paid or otherwise eliminated prior to Closing.

     (n) Stock Power. Sellers shall deliver possession of the stock in 
Horizon to Company at Closing, together with executed stock powers conveying 
unencumbered title to said shares to Company.

     (o) Resignations. Martz shall have tendered her resignation as a 
director and officer of Horizon; and all other directors shall have tendered 
their resignations.

     (p) Employment Contract. Kyle Callahan shall have executed an employment 
contract with Horizon in the form attached hereto as Exhibit Annex III.

     (q) Searches. The Company shall have received uniform commercial code 
financing statement searches conducted in the Office of the Secretary of 
State of Tennessee and such other locations as determined by Company, dated 
within five (5) days of the date of closing, which searches shall show no 
financing statements filed against Horizon.

     (r) Insurance. A Certificate from each insurance company providing 
coverage to Horizon, setting forth all coverages in effect together with the 
amount thereof.

     SECTION 5.02 Conditions Precedent to the Obligations of Sellers. The  
obligation of Sellers to consummate the transactions contemplated by this 
Agreement on the Closing Date are subject, at the option of Sellers, to the 
satisfaction at or prior to the Closing Date of each of the following 
conditions:

     (a) Accuracy of Representations and Warranties. The representations and 
warranties of the Company contained in this Agreement or in any certificate 
or document delivered to Sellers pursuant hereto shall be true and correct in 
all material respects on and as of the Closing Date as though made at and as 
of that date except for items which are specific as to time and the Company 
shall have so certified to Sellers in writing.

     (b) Compliance with Covenants. The Company shall have performed and 
complied in all material respects with all terms, agreements, covenants and 
conditions of this Agreement to be 


                                      36


performed or complied with by it at or prior to the Closing Date, and the 
Company shall have so certified to Sellers in writing.

     (c)  Legal Actions or Proceedings.  No legal action or proceeding shall 
have been instituted or threatened by any private party, by any governmental 
department, agency or authority, in either case seeking to restrain, 
prohibit, invalidate or otherwise affect the consummation of the transactions 
contemplated hereby or seeking damages which would, if adversely decided, 
cause a Material Adverse Effect.

     (d)  Other Agreements.  Each of the Other Agreements shall have been 
duly executed and delivered by the Company and the other party thereto.

     (e)  Antitrust Improvements Act.  The waiting period under the 
Hart-Scott-Rodino Act, if applicable, shall have expired or been terminated.

     (f)  Supporting Documents.  On or prior to the Closing Date, Sellers and 
its counsel shall have received copies of the following supporting documents:

          (i)  (1) the charter documents of the Company certified as of a
          recent date by the Secretary of State of the State of Delaware; and
          (2) a certificate of the Secretary of State or other appropriate 
          official of the State of Delaware as to the due incorporation and 
          good standing of the Company, and listing all documents on file 
          with said official;

          (ii)  a certificate of the Secretary of an Assistant Secretary of 
          the Company, dated the Closing Date and certifying (1) that 
          attached thereto is a true and complete copy of the Certificate of 
          Incorporation and By-laws of the Company as in effect on the date 
          of such certification; (2) that the Certificate of Incorporation of 
          the Company has not been amended since the date of the last 
          amendment referred to in the certificate delivered pursuant to 
          clause (i)(2) above; (3) that attached thereto is a true and 
          complete copy of the resolutions adopted by the Board of Directors 
          of the Company, authorizing the execution, delivery and performance 
          of this Agreement and the Other Agreements to which the Company is 
          a party and the consummation of the transactions contemplated 
          hereby and thereby; and (4) as to the incumbency and specimen 
          signature of each officer of the Company executing this Agreement, 
          any Other Agreement, and any certificate or instrument furnished 
          pursuant hereto, and a certification by another officer of the 
          Company as to the incumbency and signature of the officer signing 
          the certificate referred to in this paragraph (ii); and 

                                         37



          (iii)  such additional supporting documents and other information 
          with respect to the operation and affairs of Company as Sellers or 
          its counsel may reasonably request.

     All such document shall be reasonably satisfactory in form and substance 
to Sellers and their counsel.

     (g)  No Breach.  Company shall not have asserted any breach by Sellers 
of any representation or warranty contained in this Agreement or any document 
delivered pursuant to this Agreement or any failure by Sellers to comply with 
or satisfy any covenant, condition or agreement to be complied with or 
satisfied by Sellers hereunder.

     (h)  All Proceedings To Be Satisfactory.  All proceedings to be taken by 
Company, in connection with the transactions contemplated hereby and all 
documents incident thereto shall be reasonably satisfactory in form and 
substance to sellers and its counsel, Bass Berry & Sims, PLC and Sellers and 
said counsel shall have received all such counterpart originals or certified 
or other copies of such documents as they may reasonably request.

     (i)  Employment Contract.  Company shall have executed an employment 
contract with Kyle Callahan in the form attached hereto as Exhibit Annex III.

     (j)  Donna Ligda.  Company shall have executed an employment contract 
with Donna Ligda in the form attached hereto as Annex IV.

     (k)  Opinion.  The Sellers shall have received the opinions of Armstrong 
Allen Prewitt Gentry Johnston & Holmes, PLLC addressed to the Sellers and 
dated the Closing Date, satisfactory in form and substance to the Sellers and 
its counsel substantially in the form attached as Schedule 5.02(k) hereto.


                                  ARTICLE VI.

                             INTENTIONALLY OMITTED.


                                  ARTICLE VII.

                                 INDEMNIFICATION

     SECTION 7.01  Survival of Representations and Warranties.  None of the 
parties to this Agreement shall be deemed to have made any representation, 
warranty, covenant or agreement except as expressly set forth in this 
Agreement.  Without limiting the 

                                       38




generality of the foregoing, and except as expressly stated in Article II, no 
party to this Agreement will be liable or bound in any manner by any expressed 
or implied representation, warranty, covenant or agreement that is made to 
Company by any employee, agent or other person representing or purporting to 
represent such party. All covenants, representations and warranties made by 
Sellers in this Agreement or pursuant hereto or in any certificate delivered 
pursuant hereto SHALL SURVIVE the Closing Date, for the time periods 
indicated in this Article VII. The representations, warranties, covenants and 
agreements made by either of the Sellers shall not be affected or deemed 
waived by reason of the fact that Company or its representatives should have 
known that any such representations, warranties, covenants or agreements are 
or might be inaccurate in any respect. Any furnishing of information to 
Company by either of the Sellers, or Horizon, pursuant to, or otherwise in 
connection with, this Agreement shall not waive Company's right to rely on 
any representation, warranty, covenant or agreement made by either of the 
Sellers.

     SECTION 7.02 Tax Indemnity.

     (a) Sellers jointly and severally agree and shall indemnify and hold 
harmless the Company and Horizon (collectively the "Indemnitees"), from and 
against any and all Taxes (other than Excluded Taxes) (i) imposed on or 
incurred by Sellers or Horizon for any taxable year or taxable period ending 
on or prior to the close of the Closing Date (including any short period up 
to and including the close of the Closing Date and any Pre-Closing Straddle 
Period: (ii) imposed on or incurred by Company or Horizon (with the exception 
of transfer Taxes incurred by the Company other than as provided in Section 
4.04(a)) arising out of the purchase contemplated hereby, (iii) imposed on or 
incurred by the Company, or Sellers with respect to reasonable attorneys' 
fees and expenses with respect to contesting any of the indemnified Taxes 
referred to in clause (i) and (ii), above incurred by the Company, or 
Horizon, as well as any applicable interest, penalty or additional charge 
with respect to such Taxes. Sellers jointly and severally agree and shall 
indemnify Indemnitees from and against any and all sales, transfer and other 
like taxes and recording fees payable in connection with this Agreement or 
the transactions contemplated hereby. The indemnity obligations of Sellers 
set out in this Section 7.02(a) shall survive indefinitely.

     (b) Sellers shall not be required to indemnify the Indemnitees in 
respect of any Tax until there occurs a Final Determination (as defined 
below) of the liability of the Indemnitees for the Tax (and any interest, 
penalties and additions to the Tax) asserted to be payable as a result of any 
proposed adjustment, unless Sellers elect not to contest or defend against 
the proposed adjustment of the Tax. A "Final Determination" shall mean (i) a 
decision, judgment decree or other order by any court of competent 
jurisdiction, which decision, judgment, or decree or


                               39



other order has become final after all allowable appeals by either party to 
the action have been exhausted or the time for filing such appeal has 
expired, (ii) a closing agreement entered into under Section 7121 of the 
Internal Revenue Code or other State Authority, or any other settlement 
agreement entered into in connection with an administrative or judicial 
proceeding with the consent of Sellers, or (iii) the expiration of the time 
for instituting a claim for refund, or if such claim was filed, the 
expiration of the time for instituting a suit with respect thereto.  If 
Sellers elect to protest a proposed adjustment Sellers shall deposit an 
amount equal to the taxes in dispute with the Indemnitees (a "Tax Deposit"), 
and the Indemnitees shall, upon the receipt of such Tax Deposit from Sellers, 
promptly remit such Tax Deposit to the tax authority or court, as requested 
by Sellers and properly designate the nature of such amount.  Any interest 
expense which is stopped as a result of such Tax Deposit shall be for the 
account of Sellers.  If the Indemnitees subsequently receive a refund, in 
whole or in part, of the Tax Deposit or interest, penalties, or additions to 
Tax paid with funds advanced by Sellers, the Indemnitees shall within thirty 
(30) days of such receipt pay to Sellers the amount of such refund, plus the 
amount of any additional interest received from the Internal Revenue Service 
thereon.  Within (30) days after a Final Determination of, or the election of 
Sellers not to contest or defend against, the liability of the Indemnitees 
for which Sellers are required to make an indemnity payment hereunder Sellers 
shall pay the Indemnitees any excess of such full amount due over any 
advances or Tax Deposits previously made by Sellers (net of any prior return 
to Sellers of such advances or Tax Deposits) pursuant to this indemnity and 
any other payments previously made by Sellers with respect to such Taxes.  
The Company shall cooperate fully with Sellers in obtaining any refund or 
return of any Tax Deposits previously made by Sellers where so requested by 
Sellers.  In the event that any Tax Deposit made by Sellers has been applied 
to any Taxes payable by the Company or Horizon which are not subject to 
indemnification under this Section 7.02, the Company shall pay to Sellers an 
amount equal to the portion of the Tax Deposit so applied, together with any 
applicable interest savings actually realized by the Company or Horizon as a 
result of such application of the Tax Deposit, within (30) days following the 
day on which such Taxes would have otherwise been paid, but for the 
application of such Tax Deposit, by the Company or Horizon as the case may be.

      (c)  If, as a result of a governmental audit or examination or 
adjustment, an item of income is accelerated into a Pre-Closing Straddle 
Period or an earlier period from a Post-Closing Straddle Period or later 
period, or an item of deduction or credit is disallowed or deferred from a 
Pre-Closing Straddle Period or earlier period into a Post-Closing Straddle 
Period or later period, and shift in taxable periods shall not give rise to 
an indemnifiable claim by Company or Horizon.  If, as a result of a 

                                      40


governmental audit or examination or adjustment, an item of income is 
deferred from a Pre-Closing Straddle Period or earlier period to a 
Post-Closing Straddle Period or later period, or an item of deduction or 
credit is disallowed or accelerated from a Post-Closing Straddle Period or 
later period into a Pre-Closing Straddle Period or earlier period, the 
Company shall be entitled to file an amended Tax Return or otherwise claim a 
refund or credit, and retain all such amounts for its own account, in respect 
of any reduction in Taxes in such Pre-Closing Straddle Period or earlier 
period to the extent attributable to such shift in Tax items.

     (d)  Anything in this Agreement to the contrary notwithstanding, the 
provisions of Section 4.04 and this Section 7.02 shall survive until the 
expiration of the applicable tax statute of limitation period (including any 
extensions thereof) for the Taxes referred to herein, and any Taxes subject 
to indemnification under this Section 7.02 shall not be subject to the 
provisions of Sections 7.03 and 7.04 hereof.

     SECTION 7.03  Sellers General Indemnity.  (a) Subject to the terms and 
conditions of this Article VII, Sellers jointly and severally agree to and 
will indemnify, defend and hold the Company and Horizon harmless from and 
against all demands, claims, actions or causes of action, assessments, 
losses, damages, liabilities, costs and expenses, including without 
limitation, interest, penalties and reasonable attorneys' fees and expenses 
(hereinafter collectively called "Damages"), asserted against, resulting to, 
imposed upon or incurred by the Company, and/or Horizon, related to, 
resulting from or arising out of Horizon's obligation to pay Refunds Payable 
as defined in Section 4.01(d) inclusive of the obligation to pay the Refunds 
Payable.  The obligations of Sellers under this Section 7.03(a) shall survive 
indefinitely.

     (b)  Subject to the terms and conditions of this Article VII, Sellers 
jointly and severally agree to and will indemnify, defend and hold the 
Company and Horizon harmless from and against all demands, claims, actions or 
causes of actions, assessments, losses, damages, liabilities, costs and 
expenses, including without limitation, interest, penalties and reasonable 
attorney fees and expenses (hereinafter collectively called "Damages"), 
asserted against, resulting to, imposed upon or incurred by the Company 
and/or Horizon related to, resulting from or arising out of, (i) a breach of 
the representations and warranties made by the Sellers in Sections 2.05, 
2.07, 2.08, 2.10, 2.11, 2.12, 2.13, 2.18, 2.19, 2.20, 2.23, 2.26, 2.27, 2.31, 
2.33, 2.34 and 2.38 herein, or (ii) the nonfulfillment of any undertaking, 
agreement or covenant on the part of the Sellers hereunder, pursuant to 
Article IV, Section 1.03 and Section 9.02.  The obligations of Sellers under 
this Section 7.03(b) shall survive and shall terminate at the close of 
business on the second anniversary of the Closing Date ("First Indemnity 
Period"), except that Sellers shall continue to be responsible after such 
date for those specific claims and losses of which 


                                      41



Company or Horizon shall have given Sellers the notices required by this 
Section prior to the end of the First Indemnity Period referred to herein.  
In the event that Sellers receive actual notice, prior to the expiration of 
the above-referenced First Indemnity Period, of a claim which ultimately 
results in a loss to Company or Horizon referenced in this Section 7.03(b), 
such notice shall be deemed to constitute the notice required to be given by 
Company or Horizon hereunder, the same as if Company or Horizon had timely 
given such notice to Sellers, Sellers' indemnity obligations shall not be 
terminated as to those liabilities, losses, damages and expenses incurred by 
Company or Horizon as a result of said claim and such indemnity obligation 
shall survive until such claim shall have been finally resolved and all 
damages shall have been fully satisfied.

     (c)  Subject to the terms and conditions of this Article VII, Sellers 
jointly and severally agree to and will indemnity, defend and hold the 
Company and Horizon harmless from and against all demands, claims, actions or 
causes of actions, assessments, losses, damages, liabilities, costs and 
expenses, including without limitation, interest, penalties and reasonable 
attorney fees and expenses (hereinafter collectively called "Damages"), 
asserted against, resulting to, imposed upon or incurred by the Company 
and/or Horizon related to, resulting from or arising out of, a breach of the 
representations and warranties made by the Sellers in Sections 2.06, 2.09, 
2.14, 2.17, 2.21, 2.22, 2.25, 2.28, 2.32 and 2.39 herein.  The obligations of 
Sellers under this Section 7.03(c) shall survive and shall terminate at the 
close of business on the third anniversary of the Closing Date ("Second 
Indemnity Period"), except that Sellers shall continue to be responsible 
after such date for those specific claims and losses of which Company or 
Horizon shall have given Sellers the notices required by this Section prior 
to the end of the Second Indemnity Period referred to herein.  In the event 
that Sellers receive actual notice, prior to the expiration of the 
above-referenced Second Indemnity Period, of a claim which ultimately results 
in a loss to Company or Horizon referenced in this Section 7.03(c), such 
notice shall be deemed to constitute the notice required to be given by 
Company or Horizon hereunder, the same as if Company or Horizon had timely 
given such notice to Sellers, Sellers' indemnity obligations shall not be 
terminated as to those liabilities, losses, damages and expenses incurred by 
Company or Horizon as a result of said claim and such indemnity obligation 
shall survive until such claim shall have been finally resolved and all 
damages shall have been fully satisfied.  Notwithstanding the above 
provisions, Sellers shall not be liable for indemnity for damages related to, 
resulting from or arising out of a breach of the representation and warranty 
in Section 2.32 herein if said breach is within the scope of Section 7.03(b) 
and in such event, the remedy for a breach of the representation and warranty 
set out in Section 2.32 shall be limited to the remedies provided in Section 
7.03(b).  Similarly, if Sellers are liable for Damages relating to, resulting 
from or arising out of a breach of


                                     42



the representation and warranty in Section 2.32 which is also a breach of a 
representation or warranty set out in Section 7.04, the remedies set out in 
Section 7.04 shall govern the rights of Company and Horizon as a result of 
the breach.

     (d) Subject to the terms and conditions of this Article VII, Sellers 
jointly and severally agree to and will indemnity, defend and hold the 
Company and Horizon harmless from and against all demands, claims, actions or 
causes of actions, assessments, losses, damages, liabilities, costs and 
expenses, including without limitation, interest, penalties and reasonable 
attorney fees and expenses (hereinafter collectively called "Damages"), 
asserted against, resulting to, imposed upon or incurred by the Company 
and/or Horizon related to, resulting from or arising out of, a breach of the 
representations and warranties made by the Sellers in Sections 2.01, 2.02, 
2.03, 2.04, and 2.15 herein. The obligations of Sellers under this Section 
7.03(d) shall survive indefinitely.

     SECTION 7.04 Regulatory and Missing Insurance Indemnity. Subject to the 
terms and conditions of this Article VII, Sellers jointly and severally agree 
to and will indemnity, defend and hold the Company and Horizon harmless from 
and against all demands, claims, actions or causes of actions, assessments, 
losses, damages, liabilities, costs and expenses, including without 
limitation, interest, penalties and reasonable attorney fees and expenses 
(hereinafter collectively called "Damages"), asserted against, resulting to, 
imposed upon or incurred by the Company and/or Horizon related to, resulting 
from or arising out of, a breach of the representations and warranties made 
by the Sellers in Sections 2.16, 2.24, 2.29, 2.30, 2.35, 2.36, and 2.37 
herein or a Missing Insurance Claim.

     The obligations of Sellers under this Section 7.04 shall survive and 
shall terminate at the close of business on the seventh anniversary of the 
Closing Date ("Third Indemnity Period"), except that as to Missing Insurance 
Claims the Third Indemnity Period shall extend until the tenth anniversary of 
the Closing Date, and except, further, that Sellers shall continue to be 
responsible after such date for those specific claims and losses of which 
Company or Horizon shall have given Sellers the notices required by this 
Section prior to the end of the Third Indemnity Period referred to herein. In 
the event that Sellers receive actual notice, prior to the expiration of the 
above-referenced Third Indemnity Period, of a claim which ultimately results 
in a loss to Company or Horizon referenced in this Section 7.04, such notice 
shall be deemed to constitute the notice required to be given by Company or 
Horizon hereunder, the same as if Company or Horizon had timely given such 
notice to Sellers, Sellers' indemnity obligations shall not be terminated as 
to those liabilities, losses, damages and expenses incurred by Company or 
Horizon as a result of said claim and such indemnity obligation shall survive 
until such claim


                                       43



shall have been finally resolved and all damages shall have been fully 
satisfied.

     "Missing Insurance Claim" means any claim based on an occurrence arising 
between the time of inception of Horizon and September 2, 1993, which would 
have been covered by an insurance policy of general and professional 
liability (including products liability) if Horizon had maintained such 
coverage, but such a claim shall be a Missing Insurance Claim only up to the 
amount of the Minimum Coverage (as defined below). "Minimum Coverage" means 
coverage of not less than $1,000,000 per occurrence, $2,000,000 aggregate and 
$2,000,000 excess liability. In the event that at any time subsequent to the 
date hereof and prior to the Company's or Horizon's incurrence of any loss in 
respect of a Missing Insurance Claim, Sellers shall establish the existence 
of insurance coverage for such Missing Insurance Claim, then to the extent of 
such insurance so established, such claim shall cease to be a Missing 
Insurance Claim.

     SECTION 7.05 Conditions of Indemnification. The obligations and 
liabilities of Sellers (herein sometimes called the "indemnifying party"), to 
the Company and Horizon (herein sometimes collectively called the "party to 
be indemnified") under Section 7.03 and 7.04 hereof with respect to claims 
resulting from the assertion of liability by third parties shall be subject 
to the following terms and conditions:

     (a)  within 20 days after receipt of notice of (i) commencement of any 
action or (ii) the assertion of any claim by a third party, or (iii) the 
party to be indemnified obtains actual knowledge that an event giving rise to 
an indemnity obligation has arisen, the party to be indemnified shall give 
the indemnifying party written notice thereof specifying the factual basis of 
the claim in reasonable detail to the extent then known to the party to be 
indemnified, together with a copy of such claim, process or other legal 
pleading, if applicable, (provided that failure so to notify the indemnifying 
party of the assertion of a claim within such period shall not affect its 
indemnity obligation hereunder except as and to the extent that such failure 
shall adversely affect the defense of such claim), and the identifying party 
shall have the right to undertake the defense thereof by representatives of 
its own choosing who shall be reasonably satisfactory to the indemnified 
party;

     (b)  in the case of a third party claim, in the event that the  
indemnifying party, by the 30th day after receipt of notice of any such claim 
(or, if earlier, by the tenth day preceding the day on which an answer or 
other pleading must be served in order to prevent judgment by default in 
favor of the person asserting such claim) does not elect to defend against 
such claim, the party to be indemnified will (upon further notice to the 
indemnifying party) have the right to undertake the defense, compromise or 
settlement


                                    44



of such claim on behalf of and for the account and risk of the indemnifying 
party, subject to the right of the indemnifying party, with the consent of 
the indemnifying party, to assume the defense of such claim at any time prior 
to settlement, compromise or final determination thereof;

     (c)  anything in this Section 7.04 to the contrary notwithstanding, (i) 
if there is a reasonable probability that a claim may materially and 
adversely affect the indemnified party other than as a result of money 
damages or other money payments, the indemnified party shall have the right, 
at its own cost and expense, to compromise or settle such claim, but (ii) the 
indemnified party shall not, without the prior written consent of the 
indemnifying party, settle or compromise any claim or consent to the entry of 
any judgment which does not include as an unconditional term thereof the 
giving by the claimant or the plaintiff to the indemnifying party a release 
from all liability in respect of such claim; and

     (d)  in connection with any such indemnification, the indemnified party 
will cooperate in all reasonable requests of the indemnifying party.

     SECTION 7.06  General Provisions Relating to Indemnification.

     (a)  The party entitled to indemnification shall take all reasonable 
steps to mitigate all indemnifiable liabilities and damages upon and after 
becoming aware of any event which could reasonably be expected to give rise 
to any liabilities or damages that are indemnifiable hereunder.  No party 
shall be entitled to indemnification to the extent of any insurance, federal 
or state income tax deductions or credits arising from the indemnifiable 
event (to the extent that any savings from such deduction or credit is 
actually realized) or net proceeds of actions against third parties by 
Company or Horizon based on pre-Closing Date facts; such indemnified party 
agrees to timely notify the insurance carrier and diligently prosecute claims 
against the insurance carrier without regard to the possibility of 
indemnification hereunder.

     (b)  Neither Company, nor Horizon shall make any claim against Sellers 
for indemnification to the extent that the basis thereof has resulted in a 
purchase price adjustment pursuant to Section 1.03 hereof.

     SECTION 7.07   Exclusive Remedies.  The rights of the Sellers on the one 
hand, and Horizon and the Company on the other hand, under Article I and 
Section 4.04 and the indemnification rights provided in this Section VII 
shall be the exclusive remedy of these parties pursuant to this Agreement 
with respect to any dispute arising out of or related to this Agreement, 
except for (a) the right to seek specific performance of any of the 
agreements contained herein, or (b) in any case where one party has been

                                   45



guilty of fraud in connection with this transaction. As used herein, fraud 
shall exclude conduct which would only give rise to a claim for negligent 
misrepresentation. Notwithstanding any other provision herein purporting to 
create a greater liability, Charlton shall not be liable for an amount in 
excess of 21% of the Purchase Price unless Charlton was actively engaged in 
fraud, or had actual knowledge of fraud by Martz. In the event that Charlton 
was actively engaged in fraud or had actual knowledge of fraud by Martz, 
Charlton's liability hereunder shall not be limited by this Agreement to any 
amount or in any manner whatsoever. No provision contained in this Article 
VII shall apply to a breach of the terms of any Other Agreement executed by 
the Sellers and the parties to the Other Agreements shall have all rights and 
remedies with respect to such Other Agreements provided to them by law or 
equity without any limitation imposed hereby.

     SECTION 7.08.   Escrow Agreements. The funds held in escrow by the 
escrow agent pursuant to the Escrow Agreement are intended to give security 
to Company and Horizon in case either of the Sellers shall become liable, 
after the Closing Date, for any amounts for which Company or Horizon is 
entitled to indemnification by such Seller pursuant to Sections 7.02, 7.03 
and 7.04 hereof. The funds held in escrow by the escrow agent pursuant to the 
Refunds Payable Escrow Agreement are intended to give security to Company and 
Horizon in case either of the Sellers shall become liable, after the Closing 
Date, for any amounts for which Company or Horizon is entitled to 
indemnification by such Seller pursuant to Section 7.03 (a) hereof. Company 
may set off any amount to which it is entitled under the Article VII (except 
Section 7.03 (a)) against the escrowed funds in the Escrow Agreement and may 
set off amounts to which it is entitled under Section 7.03(a) against the 
escrowed funds in the Refunds Payable Escrow Agreement. The rights and 
remedies of Company and Horizon under the Escrow Agreement and the Refunds 
Payable Escrow Agreement shall be in addition to, and not exclusive of, any 
other rights and remedies that Company and Horizon may have against either of 
the Sellers for a breach of any provision of this Agreement or with respect 
to any of the items enumerated above. However, Company and Horizon agree that 
they will first exhaust their rights to receive the funds in the Escrow 
Agreement and the Refunds Payable Escrow Agreement, as applicable, before 
seeking to recover damages against the Sellers under this Article VII.

     SECTION 7.09.   Overall Limit.  Notwithstanding anything in this 
Agreement to the contrary, Sellers shall not be liable for any claim against 
them for indemnity under Sections 7.03(b) and (c) or 7.04 of this Agreement, 
either as asserted or as ultimately determined, equal to or less than 
$50,000.00 in the aggregate for all claims under those Sections, and the 
maximum collective liability of Sellers for any and all claims against them 
for indemnity under Sections 7.03(b) and (c) and 7.04 of this Agreement, 
shall not exceed Twenty-Five Million ($25,000,000.00) Dollars, provided that 
claims for which Sellers are not liable by

                                       46


virtue of the $50,000.00 exclusion provided above in this Section shall not 
be counted as a claim in determining said maximum liability.

     Sellers liability under Subsection 7.03(b) shall not exceed in the 
aggregate Five Million ($5,000,000.00) Dollars, and Sellers will have no 
liability with respect to the indemnification set forth in Subsection 7.03(b) 
for any amount of claims which in the aggregate exceeds Five Million 
($5,000,000.00) Dollars.

     Sellers liability under Subsection 7.03(c) shall not exceed in the 
aggregate Ten Million ($10,000,000.00) Dollars, and Sellers will have no 
liability with respect to the indemnification set forth in Subsection 7.03(c) 
for any amount of claims which in the aggregate exceeds Ten Million 
($10,000,000.00) Dollars.

     Sellers liability under Section 7.04 shall not exceed in the aggregate 
Twenty-Five Million ($25,000,000.00) Dollars, and Sellers will have no 
liability with respect to the indemnification set forth in Section 7.04 for 
any amount of claims which in the aggregate exceeds Twenty-Five Million 
($25,000,000.00) Dollars.


     SECTION 7.10.   Allocation of Indemnity Obligation.  In the event that 
Sellers are liable for indemnity under Sections 7.02, 7.03 or 7.04 of this 
Agreement, the individual liability of Charlton shall be limited to 21% of 
the amount of the indemnity claimed and the individual liability of Martz 
shall be limited to 79% of the amount of the indemnity claimed.

     SECTION 7.11.   General Company Indemnity. Subject to the terms and 
conditions of this Article VII, the Company agrees to and will indemnify, 
defend and hold Sellers harmless from and against all Damages asserted 
against, resulting to, imposed upon or incurred by Sellers, resulting from or 
arising out of (i) a breach of the representations, warranties or covenants 
made by the Company in this Agreement or any document delivered by or for it 
pursuant to this Agreement, or (ii) any event or claim occurring or arising 
out of the operation of Horizon after the Closing Date.


                                  ARTICLE VIII.

                            TERMINATION AND ABANDONMENT

     SECTION 8.01.  Termination.  This Agreement may be terminated at any 
time prior to the closing on the Closing Date:

     (a)  by the mutual consent of the Company and Sellers; or


                                        47


     (b)  by either the Company or Sellers if the Closing Date shall not have 
occurred on or before June 5, 1997 or such later date as may be agreed upon 
by them; provided, however, that the right to terminate this Agreement under 
this clause (b) shall not be available to any party (a "Defaulting Party") 
whose failure (or whose affiliate's or affiliates' failure) to fulfill any 
obligation under this Agreement has been the cause of, or resulted in the 
failure of the Closing to occur on or before such date.

     No such termination shall affect the liability hereunder of any 
Defaulting Party.

     SECTION 8.02.  Procedure and Effect of Termination.  In the event of 
termination of this Agreement and abandonment of the transactions 
contemplated hereby pursuant to Section 8.01 above, written notice thereof 
shall forthwith be given to the other parties to this Agreement and this 
Agreement shall terminate and the transactions contemplated hereby shall be 
abandoned, without further action by any of the parties hereto. If this 
Agreement is terminated as provided in this Agreement:

     (a) the parties hereto will promptly redeliver all documents, work 
papers and other material of any other party relating to the transactions 
contemplated hereby, whether obtained before or after the execution hereof, 
to the party furnishing the same; and

     (b) no party shall have any liability or further obligation to any other 
party to this Agreement pursuant to this Agreement except as provided in 
Section 8.01 above or Section 9.01.



                                    ARTICLE IX.

                                   MISCELLANEOUS

     SECTION 9.01.  Expenses, Etc. Whether or not the transactions 
contemplated by this Agreement are consummated, Sellers and Company shall 
split the cost of filing fees under the Hart-Scott-Rodino Act, but otherwise, 
none of the parties hereto shall have any obligation to pay any of the fees 
and expenses of any other party incident to the negotiation, preparation and 
execution of this Agreement, including the fees and expenses of counsel, 
accountants, investment bankers and other experts, except as hereinafter 
provided or as otherwise provided in Section 1.03(e). If such transactions 
are consummated, then the Company shall pay the fees and expenses of (i) 
Armstrong Allen Prewitt Gentry Johnston & Holmes for its legal services to 
the Company, (ii) Epstein, Becker & Green, P.C. for its legal services to the 
Company, and (iii) subject to the provisions of Section 1.03(e), E&Y for its 
accounting and other related services to the Company. Sellers will


                                       48


pay the fees and expenses of (i) Healthcare Capital Advisors for its 
financial advisory services to Sellers, (ii) Bass Berry & Sims for its legal 
services to Sellers and (iii) Price & Associates for its services to Sellers. 
Sellers will indemnify the Company, and, to the extent the transactions 
contemplated by this Agreement are consummated, Horizon and hold each of them 
harmless from and against any claims for finders' fees or brokerage 
commissions in relation to or in connection with such transactions as a 
result of any agreement or understanding between Sellers or Horizon and any 
third party. The Company will indemnify Sellers and hold each of them 
harmless from and against any claims for finders' fees or brokerage 
commissions in relation to or in connection with such transactions as a 
result of any agreement or understanding between the Company and any third 
party.

     SECTION 9.02.   Publicity. The parties hereto agree to cooperate in 
issuing any press release or other public announcement concerning this 
Agreement or the transactions contemplated hereby. Each party shall furnish 
to the other drafts of all such press releases or announcements prior to 
their release. In the case of any press release or communication proposed to 
be made (i) by Sellers relating to the transactions contemplated by this 
Agreement, the prior consent (which shall not be unreasonably withheld) of 
Company shall be obtained with respect to the timing and contents thereof, or 
(ii) by the Company relating to the transactions contemplated by this 
Agreement, the prior consent (which shall not be unreasonably withheld) of 
Sellers shall be obtained with respect to the timing and contents thereof. 
Nothing contained herein shall prevent any party from at any time furnishing 
any information required by any governmental authority.

     SECTION 9.03.   Execution in Counterparts. For the convenience of the 
parties, this Agreement may be executed in one or more counterparts, each of 
which shall be deemed an original, but all of which together shall constitute 
one and the same instrument.

     SECTION 9.04.   Notices. All notices which are required or may be given 
pursuant to the terms of this Agreement shall be in writing and shall be 
sufficient in all respects if (i) delivered personally, (ii) mailed by 
registered or certified mail, return receipt requested and postage prepaid, 
(iii) sent via a nationally recognized overnight courier service or (iv) sent 
via facsimile confirmed in writing to the recipient, in each case as follows:

     If to Sellers to:

     Ms. Dianne Martz
     401 Wayside Court
     Nashville, Tennessee   37205
          and
     A.B. Charlton, III


                                       49


     11132 Outlet Drive
     Knoxville, Tennessee   37932

     with a copy to:

     Bass Berry & Sims, PLC
     270F first American Center
     Nashville, Tennessee   37238
     Attn:  Samuel E. Stumpf, Esq.
     Facsimile No.: 615-742-6298


     If to Company or Horizon, to:

     1620 Century Center Parkway, Ste. 109
     Memphis, Tennessee   38134
     Facsimile No.: (901) 385-3780

     Attention:  Mr. David D. Stevens


     with a copy to:

     Armstrong, Allen, Prewitt, Gentry,
          Johnston & Holmes
     Brinkley Plaza
     80 Monroe Avenue, Suite 700
     Memphis, Tennessee   38103-2467
     Facsimile No.: (901) 524-4936
     Attention:  Thomas W. Bell, Jr., Esq.


or such other address or addresses as any party shall have designated by 
notice in writing to the other parties. All notices shall be deemed to have 
been given or made when delivered by hand or courier or when sent by 
facsimile, or, if mailed, five business days after being so mailed.

     SECTION 9.05.   Waivers. Either Sellers or Company may, by written 
notice to the other, and without the consent of any other party hereto, (i) 
extend the time for the performance of any of the obligations or other 
actions of the other under this Agreement, (ii) waive any inaccuracies in the 
representations or warranties of the other contained in this Agreement or in 
any document delivered pursuant to this Agreement, (iii) waive compliance 
with any of the conditions or covenants of the other contained in this 
Agreement, or (iv) waive performance of any of the obligations of the other 
under this Agreement. Except as provided in the preceding sentence and in 
Section 7.01, no action taken pursuant to this Agreement, including without 
limitation any investigation by or on behalf of any party, shall be deemed to 
constitute a waiver by the party


                                       50
 


taking such action, of compliance with any representations, warranties, 
covenants or agreements contained in this Agreement. The waiver by any party 
hereto of a breach of any provision of this Agreement shall not operate or be 
construed as a waiver of any subsequent breach.

     SECTION 9.06.   Amendments. This Agreement may be amended, without the 
consent of any other party, only by an instrument in writing signed by the 
Company and Sellers.

     SECTION 9.07.  Entire Agreement. This Agreement, its Exhibits, Schedules 
and Annexes, the Other Agreements referred to in Section 5.01 and the 
documents and agreements executed on the Closing Date in connection herewith, 
constitute the entire agreement between the parties hereto with respect to 
the subject matter hereof and supersede all prior agreements and 
understandings, oral and written, between the parties hereto with respect to 
the subject matter hereof.

     SECTION 9.08.   APPLICABLE LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND 
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TENNESSEE, EXCLUSIVE OF 
THE CONFLICTS OF LAWS PROVISIONS THEREOF.

     SECTION 9.09.   Binding Effect: Benefits. This Agreement shall inure to 
the benefit of and be binding upon the parties hereto and their respective 
successors and permitted assigns. Notwithstanding anything contained in this 
Agreement to the contrary, nothing in this Agreement, expressed or implied, 
is intended to confer on any person other than the parties hereto or their 
respective successors and assigns, any rights, remedies, obligations or 
liabilities under or by reason of this Agreement.


                       [Rest of page intentionally left blank]


                                       51


     SECTION 9.10 Assignability. Neither this Agreement nor any of the 
parties' rights hereunder shall be assignable by any party hereto without the 
prior written consent of the other parties hereto.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the day and year first above written.

                                       NOVA HOLDINGS, INC.
                                       By:  /s/ Paul D. Steven
                                            ------------------------------
                                            Title: CEO
                                                   -----------------------


                                       HORIZON HEALTH SYSTEMS, INC.
                                       By:  /s/ Dianne R. Martz
                                            ------------------------------
                                            Title: President
                                                   -----------------------


                                       /s/ Dianne R. Martz
                                       -----------------------------------
                                       DIANNE R. MARTZ


                                       /s/ A.B. Charlton, III
                                       -----------------------------------
                                       A.B. CHARLTON, III