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John R. Murphy
Associate General Counsel
MetLife
1095 Avenue of the Americas
New York, NY 10036
T: 212-578-3096
F: 212-251-1596

April 6, 2012

Re:   MetLife Insurance Company of Connecticut
      File No. 333-178886
      Registered Fixed Account Option

Ladies and Gentlemen:

This opinion is furnished in connection with the proposed offering of a certain
fixed annuity contract (the "Contract") issued by MetLife Insurance Company of
Connecticut ("MICC") under Registration Statement No. 333-178886 (the
"Registration Statement") and described therein, filed by MICC under the
Securities Act of 1933, as amended. MICC is a wholly-owned subsidiary of
MetLife, Inc. and an affiliate of Metropolitan Life Insurance Company.

I have made such examination of law and examined such records of MICC and other
documents as in my judgment are necessary or appropriate to render the opinion
expressed below. In my opinion:

1. MICC is a corporation validly existing and in good standing under the laws of
the State of Connecticut.

2. The offer and sale by MICC of the Contracts have been duly authorized
pursuant to the corporate and insurance laws of the State of
Connecticut and the Company's governing documents. Each Contract, when
delivered and when the first purchase payment thereunder is made, all in
accordance with the prospectus (the "Prospectus") included in the Registration
Statement and in compliance with the applicable local law, will be a legal and
binding obligation of MICC in accordance with its terms. Owners of Contracts, as
such, will not be subject to any deductions and charges by MICC other than those
described or referred to in the Prospectus.

I hereby consent to the use of this opinion as Exhibit 5 to the Registration
Statement.

Very truly yours,

/s/ John R. Murphy
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John R. Murphy