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Frears' debut feature film was "Gumshoe," a 1971 British neo-noir crime thriller. The film follows the story of Billy Hare, a private detective who becomes entangled in a complex case involving murder, blackmail, and political corruption. "Gumshoe" established Frears as a rising talent in British cinema, showcasing his signature blend of gritty realism, dark humor, and social commentary.