Although some of this was shot in New York (the police department interior, for example), it is unquestionably Boston that dominates the screen here. Scorcese shot 'The Departed' all over the city . . . Chinatown, South Boston, Charlestown (setting for Nicholson's apartment), Quincy, Chelsea and the waterfront . . . in this tremendous movie about the gangster who infiltrates the police and the cop who infiltrates the mob