Alain Delon as Jef Costello

François Périer as Superintendant

Nathalie Delon as Jane Lagrange

Cathy Rosier as Valérie

Michel Boisrond as Wiener

Catherine Jourdan as Locker Room Girl

Jean-Pierre Posier as Olivier Rey

Robert Favart as Bartender

Jacques Leroy as Walkway Man

Roger Fradet as Inspector #1

Carlo Nell as Inspector #2

Robert Rondo as Inspector #3

André Salgues as Garage Owner

André Thorent as Policeman / Taxi Driver

Jacques Deschamps as Policeman Speaker

Georges Casati as Damolini

Jacques Léonard as Garcia

Pierre Vaudier as Policeman of the night visit #1

Maurice Magalon as Policeman of the night visit #2

Gaston Meunier as Hotel Manager

Jean Gold as Night-Club customer #1

Georges Billy as Night-Club customer #2

Ari Aricardi as Poker Player

Guy Bonnafoux as Poker Player

Humberto Catalano as Inspector

Carl Lechner as Jef Lookalike

Maria Maneva as Girl with chewing-gum