William Friedkin Director Gene Hackman Det. Jimmy "Popeye" Doyle Actor Fernando Rey Alain Charnier Actor Roy Scheider Det. Buddy "Cloudy"'Russo Actor Tony Lo Bianco Salvatore "Sal" Boca Actor Marcel Bozzuffi Pierre Nicoli, Hit Man Actor Frédéric de Pasquale Henri Devereaux Actor Bill Hickman Bill Mulderig Actor Ann Rebbot Mrs. Marie Charnier Actor Harold Gary Joel Weinstock Actor Arlene Farber Angie Boca Actor Eddie Egan Walt Simonson Actor Andre Ernotte La Valle Actor Sonny Grosso Bill Klein Actor Al Fann Informant Actor G. David Schine Executive Producer Kenneth Utt Associate Producer Don Ellis Original Music Owen Roizman Cinematographer Robert Weiner Casting Ben Kazaskow Art Director Edward Garzero Set Decoration William C. Gerrity Assistant Director Terence A. Donnelly Assistant Director Philip D'Antoni Producer Ernest Tidyman Screenwriter