In Paris, Bob Montagne is practically synonymous with gambling -- and winning. He is kind, classy and well-liked by virtually everyone in town, including police inspector Ledru. However, when Bob's luck turns sour, he begins to lose friends and makes the most desperate gamble of his life: to rob the Deauville casino during Grand Prix weekend, when the vaults are full. Unfortunately, Bob soon learns that the game is rigged and the cops are on to him.
Roger Duchesne
as Robert 'Bob le Flambeur' Montagné
Isabelle Corey
as Anne
Daniel Cauchy
as Paulo
Gérard Buhr
as Marc
Guy Decomble
as Police Commissary Ledru
Claude Cerval
as Jean, the Croupier
Howard Vernon
as McKimmie, the Sponsor
Colette Fleury
as Suzanne, Jean's Girlfriend
Simone Paris
as Yvonne
René Havard
as Inspector Morin
André Garet
as Roger
Jean-Pierre Melville
as Narrator (voice) (uncredited)