Jean-Paul Belmondo character Arthur Lespinasse
Bourvil character Anatole
David Niven character Col. Carol Matthews, aka "Le Cerveau"
Eli Wallach character Frankie Scannapieco
Silvia Monti character Sofia Scannapieco
Raymond Gérôme character Commissioner
Jacques Balutin character Inspector Pochet
Yves Barsacq character Prison Guard
Jacques Ciron character Inspector Duboeuf
Robert Dalban character Belgian with a Cold
Mario David character Jean-François, antique dealer
Henri Attal character Man of the gang
Raoul Delfosse character Belgian military policeman
Tommy Duggan character Superintendant Cummings
Henri Génès character Head warden of Poissy prison
Sophie Grimaldi character Blonde of the train
Fernand Guiot character Inspector Mazurel
Roger Lumont character Boss of the shop
Paul Mercey character André, gentleman of the 5th
Max Montavon character Effeminate antique dealer
Patrick Préjean character Belgian sergeant
John Rico character Mafioso
Arch Taylor character Mafioso
Dominique Zardi character Prison Guard
Roland Monk character Belgian soldier
Micha Bayard character Lady of the 5th (uncredited)
Gérard Hernandez character Agent in Le Havre (uncredited)
Pierre Tornade character Belgian soldier at the Gare de l'Est (uncredited)
César Torres character (uncredited)
