The Departed is a remake of the 2002 Hong Kong film Infernal Affairs, and is partially based on the real-life Winter Hill Gang in Boston. But what about the character of Frank Costello - who is he based on?

Answer Whitey Bulger

The character of Frank Costello is based on the Irish-American mobster Whitey Bulger. He was an American organized crime leader and FBI informant who commanded the Winter Hill Gang in Somerville, a city northwest of Boston.

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