METROPOLITAN SERIES    FUND,  INC. SUMMARY PROSPECTUS    May 1, 2010

MFS^® Total Return Portfolio

Class A, Class B, Class E and Class F Shares

Before you invest, you may want to review the Portfolio’s Prospectus, which contains more information about the Portfolio and its risks. You can find the Portfolio’s Prospectus and other information about the Portfolio (including the documents listed below) online at www.metlife.com/variablefunds. You can also get this information at no cost by calling 1-800-638-7732 or by sending an e-mail request to RCG@metlife.com. The Portfolio’s Prospectus and Statement of Additional Information, both dated May 1, 2010, and the financial statements of the Portfolio for the year ended December 31, 2009, including notes to the financial statements and financial highlights and the report of the Portfolio’s independent registered public accounting firm, which are included in the Annual Report of the Portfolio, are all incorporated by reference into this Summary Prospectus. This Summary Prospectus is intended for individuals who have purchased certain variable life insurance policies and variable annuity contracts (collectively, “Contracts”) from Metropolitan Life Insurance Company and its affiliates and is not intended for other investors.

Investment Objective

Favorable total return through investment in a diversified portfolio.

Fees and Expenses of the Portfolio

The following table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio. These fees and expenses are based on the year ended December 31, 2009, and are expressed as a percentage of the Portfolio’s average daily net assets over that period. The table and the Example below do not reflect the fees, expenses or withdrawal charges imposed by the Contracts. See the Contract prospectus for a description of those fees, expenses and charges. If Contract expenses were reflected, the fees and expenses in the table and Example would be higher.

Shareholder Fees (fees paid directly from your investment)—None

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

	Class A	Class B	Class E	Class F
Management Fee	0.54%	0.54%	0.54%	0.54%
Distribution and Service (12b-1 Fees)	None	0.25%	0.15%	0.20%
Other Expenses	0.06%	0.06%	0.06%	0.06%
Total Annual Portfolio Operating Expenses	0.60%	0.85%	0.75%	0.80%

Example

The following Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year, that you reinvest all of your dividends and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	Class A	Class B	Class E	Class F
1 Year	$61	$87	$77	$82
3 Years	$192	$271	$240	$255
5 Years	$335	$471	$417	$444
10 Years	$750	$1,049	$930	$990

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 43% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in a combination of equity and fixed income securities.

Massachusetts Financial Services Company (“MFS”), subadviser to the Portfolio, under normal circumstances seeks to invest between 40% and 75% of the Portfolio’s net assets in equity securities, including common stocks, preferred stocks, securities convertible into stocks, and depositary receipts for equity securities, and at least 25% of the Portfolio’s net assets in fixed-income senior securities.

The fixed-income securities in which the Portfolio may invest include, but are not limited to, corporate bonds, U.S. Government Securities (e.g., obligations of the U.S. Government or its agencies or instrumentalities), foreign government securities, mortgage-backed securities and asset-backed securities. Generally, substantially all of the Portfolio’s investments in debt instruments are rated investment grade.

MFS focuses on investing the Portfolio’s assets in the stocks of companies that it believes are undervalued compared to their perceived worth (“value” companies). Value companies tend to have stock prices that are low relative to their earnings, dividends, assets, or other financial measures.

Consistent with the principal investment strategies above, the Portfolio may invest up to 25% of its net assets in foreign securities and may have exposure to foreign currencies through its investments in these securities.

While MFS may invest the Portfolio’s assets in companies of any size, MFS generally focuses on companies with large capitalizations ($5 billion or more).

MFS may use derivatives for different purposes, including to earn income and enhance returns, to increase or decrease exposure to a particular market, to manage or adjust the risk profile of the Portfolio, or as alternatives to direct investments.

The Portfolio may also invest in forward commitments and when-issued and delayed delivery securities.

Investment Selection

MFS uses a bottom-up investment approach in buying and selling investments for the Portfolio. Investments are selected primarily based on fundamental analysis of issuers or instruments in light of market, economic, political, and regulatory conditions. Factors considered for equity securities may include earnings, cash flows, competitive position, and management ability. Quantitative analysis of these and other factors may also be considered. Factors considered for debt instruments may include the instrument’s credit quality, collateral characteristics and indenture provisions and the issuer’s management ability, capital structure, leverage, and ability to meet its current obligations. Quantitative models that systematically evaluate the structure of a debt instrument and its features may also be considered.

Primary Risks

As with all mutual funds, there is no guarantee that the Portfolio will achieve its investment objective. You could lose money by investing in the Portfolio. An investment in the Portfolio through a Contract is not a deposit or obligation of, or guaranteed by, any bank, and is not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. Government.

The value of your investment in the Portfolio may be affected by one or more of the following risks, which are described in more detail in “Primary Risks of Investing in the Portfolio” in the Prospectus, any of which could cause the Portfolio’s return or the price of its shares to decrease or could cause the Portfolio’s yield to fluctuate. Please note that there are many other circumstances that could adversely affect your investment and prevent the Portfolio from reaching its objective, which are not described here.

Market Risk.    The Portfolio’s share price can fall because of, among other things, a decline in the market as a whole, deterioration in the prospects for a particular industry or company, or changes in general economic conditions, such as prevailing interest rates and investor sentiment. Significant disruptions to the financial markets could adversely affect the liquidity and volatility of securities held by the Portfolio.

Market Capitalization Risk.    Investing primarily in issuers in one market capitalization category (large, medium or small) carries the risk that due to current market conditions that category may be out of favor with investors. Larger, more established companies may be unable to respond quickly to new competitive challenges or attain the high growth rate of successful smaller companies. Stocks of smaller companies may be more volatile than those of larger companies due to, among other things, narrower product lines, more limited financial resources and fewer experienced managers. In addition, there is typically less publicly available information about small capitalization companies, and their stocks may have a more limited trading market than stocks of larger companies.

Investment Style Risk.    Different investment styles such as growth or value tend to shift in and out of favor, depending on market and economic conditions as well as investor sentiment. The Portfolio may outperform or underperform other funds that employ a different investment style.

Interest Rate Risk.    The value of the Portfolio’s investments in fixed income securities may decline when prevailing interest rates rise or increase when interest rates go down. The longer a security’s maturity or duration, the greater its value will change in response to changes in interest rates. The interest earned on the Portfolio’s investments in fixed income securities may decline when prevailing interest rates decline.

Credit and Counterparty Risk.    The value of the Portfolio’s investments may be adversely affected if a security’s credit rating is downgraded; an issuer of an investment held by the Portfolio fails to pay an obligation on a timely basis, otherwise defaults or is perceived by other investors to be less creditworthy; or a counterparty to a derivatives or other transaction with the Portfolio files for bankruptcy, becomes insolvent, or otherwise becomes unable or unwilling to honor its obligation to the Portfolio.

Mortgage-Backed and Asset-Backed Securities Risk.    The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that issuers will prepay the principal more quickly or more slowly than expected, which could cause the Portfolio to invest the proceeds in less attractive investments or increase the volatility of their prices. To the extent mortgage-backed and asset-backed securities held by the Portfolio are backed by lower rated securities, such as sub-prime obligations, or are subordinated to other interests in the same mortgage or asset pool, the likelihood of the Portfolio receiving payments of principal or interest may be substantially limited.

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Foreign Investment Risk.    Investments in foreign securities tend to be more volatile and less liquid than investments in U.S. securities because, among other things, they involve risks relating to political, social and economic developments abroad, as well as risks resulting from differences between the regulations and reporting standards and practices to which U.S. and foreign issuers are subject. To the extent foreign securities are denominated in foreign currencies, their values may be adversely affected by changes in currency exchange rates. All of the risks of investing in foreign securities are typically increased by investing in emerging market countries.

Derivatives Risk.    The Portfolio may invest in derivatives to obtain investment exposure, enhance return or “hedge” or protect its assets from an unfavorable shift in the value or rate of a reference instrument. Derivatives can significantly increase the Portfolio’s exposure to market risk, credit and counterparty risk and other risks. Derivatives may be illiquid and difficult to value. Because of their complex nature, some derivatives may not perform as intended. As a result, the Portfolio may not realize the anticipated benefits from a derivative it holds or it may realize losses. Derivative transactions may create investment leverage, which may increase the Portfolio’s volatility and may require the Portfolio to liquidate portfolio securities when it may not be advantageous to do so.

Convertible Securities Risk.    Investments in convertible securities may be subject to market risk, credit and counterparty risk, interest rate risk and other risks associated with investments in equity and fixed income securities, depending on the price of the underlying security and the conversion price. In addition, a convertible security may be bought back by the issuer at a time and a price that is disadvantageous to the Portfolio.

Forward Commitment, When-Issued and Delayed Delivery Securities Risk.    Investments in forward commitments and when-issued and delayed delivery securities are subject to the risk that the value or yield of the securities the Portfolio is obligated to purchase may decline below the agreed upon purchase price or expected yield before the securities are actually issued or delivered. These investments may create a form of investment leverage, which may increase the Portfolio’s volatility and may require the Portfolio to liquidate portfolio securities when it may not be advantageous to do so.

Past Performance

The information below shows the volatility of the Portfolio’s returns from year to year and how the Portfolio’s average annual returns over time compare with those of a broad-based securities market index. Both the bar chart and table assume reinvestment of dividends and distributions. Note that the results in the bar chart and table do not include the effect of Contract charges. If these Contract charges had been included, performance would have been lower. As with all mutual funds, past returns are not a prediction of future returns. On July 1, 2001, MFS succeeded Back Bay Advisors, L.P. (“Back Bay Advisors”) as subadviser to the Portfolio. The performance information set forth below reflects the management of both Back Bay Advisors and MFS.

The bar chart below shows you the performance of the Portfolio’s Class A shares for the last ten full calendar years and indicates how it has varied from year to year. The Portfolio can also experience short-term performance swings as indicated in the high and low quarter information at the bottom of the chart. The table below compares the Portfolio’s average annual compounded total returns for each class with relevant index returns. For more information about indexes, please see “Index Description” in the Prospectus. It is not possible to invest directly in an index.

Year-by-Year Total Return as of December 31 of Each Year

Highest Quarter	2nd – 2009	11.34%
Lowest Quarter	4th – 2008	-11.83%

Average Annual Total Return as of December 31, 2009
	1 Year	5 Years	10 Years	Since Inception	Inception Date
Class A	18.60%	2.20%	2.47%	—	—
Class B	18.30%	1.95%	N/A	3.62%	5-1-02
Class E	18.42%	2.05%	N/A	3.29%	4-26-04
Class F	18.36%	N/A	N/A	0.94%	5-2-06
S&P 500 Index	26.46%	0.42%	-0.95%	—	—
Barclays Capital U.S. Aggregate Bond Index	5.93%	4.97%	6.33%	—	—
(Indices reflect no deduction for mutual fund fees or expenses.)

Management

Adviser.    MetLife Advisers, LLC (“MetLife Advisers”) is the Portfolio’s investment adviser. For more information about the adviser, please see “Additional Information about Management—The Adviser” in the Prospectus and “Advisory Arrangements” in the Statement of Additional Information.

Subadviser.    Massachusetts Financial Services Company is the subadviser to the Portfolio. For more information about the subadviser, please see “Additional Information about Management—The Subadviser” in the Prospectus and “Advisory Arrangements” in the Statement of Additional Information.

Portfolio Managers.    The Portfolio is managed by a team led by Brooks A. Taylor, who has been a manager of the Portfolio since 2004. Other members of the team are Michael W. Roberge (since 2002), Steven R. Gorham (since 2002), Richard O. Hawkins (since 2005), Nevin P. Chitkara (since

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2006), William P. Douglas (since 2004) and Joshua P. Marston (since 2008). For additional information, please see “Additional Information about Management—The Subadviser” in the Prospectus and “Portfolio Managers” in the Statement of Additional Information.

Tax Information

For information regarding the tax consequences of Contract ownership, please see the prospectus for the relevant Contract.

Payments to Insurance Companies and Their Affiliates

The Portfolio is not sold directly to the general public but instead is offered as an underlying investment option for Contracts issued by insurance companies that are affiliated with the Portfolio and MetLife Advisers. As a result of these affiliations, the insurance companies may benefit more from offering the Portfolio as an investment option in the Contracts than offering other unaffiliated portfolios. The Portfolio and its related companies may also make payments to the sponsoring insurance companies (or their affiliates) for distribution and/or other services. The benefits to the insurance companies of offering the Portfolio over unaffiliated portfolios and these payments may be factors that the insurance companies consider in including the Portfolio as an underlying investment option in the Contracts and may create a conflict of interest. The prospectus for your Contract contains additional information about these payments.

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