The mystery film in this instance which involves an enigmatic woman, her corrupt father and a L.A. detective is titled "Chinatown" (1974). This is a film that was directed by Roman Polanski from a screenplay by Robert Towne. It was produced by Robert Evans.

In the film, Los Angeles private eye J.J. "Jake" Gittes (Jack Nicholson) is hired by Evelyn Mulwray to investigate her husband's activities. Mulwray believes it's a routine infidelity case. Jake's investigation soon becomes anything but routine. He meets the real Mrs. Mulwray (Faye Dunaway) and realizes he was hired by an imposter. Mr. Mulwray's sudden death sets Gittes on a tangled trail of corruption, deceit, and sinister family secrets as Evelyn's father (John Huston) becomes a suspect in the case.

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