Roman Polanski	...	(Réalisateur)
Robert Towne	...	(Scénariste)
Jim Burk	...
Fritzi Burr	...
Lee de Broux	...
Faye Dunaway	...	Evelyn Mulwray
Cecil Elliott	...
Jack Nicholson	...	J.J. Gittes
John Huston	...	Noah Cross
Perry Lopez	...	Escobar
John Hillerman	...	Yelburton
Darrell Zwerling	...	Hollis Mulwray
Diane Ladd	...	Ida Sessions
Roy Jenson	...	Mulvihill
Roman Polanski	...	Man with Knife
Richard Bakalyan	...	Loach (as Dick Bakalyan)
Joe Mantell	...	Walsh
Bruce Glover	...	Duffy
Nandu Hinds	...	Sophie
James O'Rear	...	Lawyer
James Hong	...	Evelyn's Butler

Résumé: JJ 'Jake' Gittes is a private detective who seems to specialize in matrimonial cases. He is hired by Evelyn Mulwray when she suspects her husband Hollis, builder of the city's water supply system, of having an affair. Gittes does what he does best and photographs him with a young girl but in the ensuing scandal, it seems he was hired by an impersonator and not the real Mrs. Mulwray. When Mr. Mulwray is found dead, Jake is plunged into a complex web of deceit involving murder, incest and municipal corruption all related to the city's water supply.