The Two Jakes (1990)

Private investigator and war veteran Jake Gittes (Jack Nicholson) is hired by real estate developer Jake Berman (Harvey Keitel) for some run-of-the-mill matrimonial work. After Berman shoots his wife's lover, who happens to be his own business partner, Gittes is drawn into a web of conspiracy and deceit involving the oil reserves beneath Los Angeles. While investigating, Gittes hears a voice from his past that causes him to revisit a traumatic case in Chinatown.