Polanski, Roman	...	(Director)
Robert Towne	...	(Writer)
Jack Nicholson	...	J.J. Gittes
Faye Dunaway	...	Evelyn Mulwray
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
Joe Mantell	...	Walsh
Bruce Glover	...	Duffy
Nandu Hinds	...	Sophie
James O'Rear	...	Lawyer
James Hong	...	Evelyn's Butler
Jerry Goldsmith	...	Composer
Stanley Cortez	...	Cinematographer
John A. Alonzo	...	Cinematographer
Sam O'Steen	...	Editor
Richard Sylbert	...	Production Designer
Beulah Quo	...	Maid
Jerry Fujikawa	...	Gardener
Belinda Palmer	...	Katherine
Roy Roberts	...	Mayor Bagby
Noble Willingham	...	Councilman
Elliott Montgomery	...	Councilman
Rance Howard	...	Irate Farmer
George Justin	...	Barber
C.O. Erickson	...	Customer (as Doc Erickson)
Fritzi Burr	...	Mulwray's Secretary
Charles Knapp	...	Mortician
Claudio Martínez	...	Boy on Horseback
Federico Roberto	...	Cross' Butler
Allan Warnick	...	Clerk
John Holland	...	Farmer in the Valley
Jesse Vint	...	Farmer in the Valley
Jim Burk	...	Farmer in the Valley (as Jim Burke)
Denny Arnold	...	Farmer in the Valley
Burt Young	...	Curly
Elizabeth Harding	...	Curly's Wife
John Rogers	...	Mr. Palmer
Cecil Elliott	...	Emma Dill
Logan Frazee	...	Special Effects
John C. Hammell	...	Music Editor
Paul Jenkins	...	Policeman
Lee de Broux	...	Policeman (as Lee DeBroux)
Bob Cornett	...	Sound Editor
Anthea Sylbert	...	Costume Design
Bob Golden	...	Policeman
Ruby R. Levitt	...	Set Decoration
W. Stewart Campbell	...	Art Direction
Mike Fenton	...	Casting
Jane Feinberg	...	Casting

Summary: A private detective investigating an adultery case stumbles on to a scheme of murder that has something to do with water.