Alain Delon character Roch Siffredi
Riccardo Cucciolla character Volpone
Daniel Ivernel character Inspector Fanti
Reinhard Kolldehoff character Sam
Catherine Rouvel character Lola
Lionel Vitrant character Fernand
André Falcon character Inspector Cazenave
Adolfo Lastretti character Luciano
Pierre Koulak character Spada
Serge Davri character Charlie
Greg Germain character Le 'Nègre'
Marius Laurey character Inspector Teissère
Günter Meisner character Doctor
Jacques Debary character Prefect
Djéloul Beghoura character Lucien
Anton Diffring character German
Bruno Balp character Spectator of the Alcazar
Günter Spörrle character Giuliano (uncredited)
Henri Attal character Guard at the asylum (uncredited)
Roger Lumont character Boss of the bar de la Marine (uncredited)
Marc Eyraud character Chief medical officer of the asylum (uncredited)
Jacques Pisias character Man of Sam (uncredited)
Joëlle Bernard character Madam (uncredited)
Marie Marczack character Employee of the Alcazar (uncredited)
Janine Souchon character Nun at the asylum (uncredited)
Sylvain Lévignac character Doorman (uncredited)
Philippe Castelli character Hairdresser (uncredited)
Marcel Gassouk character Card player (uncredited)
Maurice Auzel character Policeman / Man of Sam (uncredited)
Mireille Darc character Prostitute in the street (uncredited)
Laure Moutoussamy character Prostitute (uncredited)
Claudine Auger character Passenger on the liner (uncredited)
Jean Abeillé character (uncredited)
Gabriella Farinon character (uncredited)