Jean-Paul Belmondo
Arthur Lespinasse
David Niven
Colonnel Carol Matthews, aka 'Le Cerveau'
Eli Wallach
Frankie Scannapieco, godfather of the Italian mafia
Silvia Monti
Sofia Scannapieco, Frankie's sister
Raymond Gérôme
Commissioner
Fernand Guiot
Inspector Mazurel, assistant to the commissioner
Jacques Balutin
Inspector Pochet
Jacques Ciron
Inspector Dubœuf
Patrick Préjean
Belgian Sergeant of the armoured car
Robert Dalban
Belgian soldier of the armored car (with a cold)
Raoul Delfosse
Belgian soldier of the armored car
Roland Monk
Belgian soldier of the armored car
Mario David
Jean-François, antique dealer in Le Havre
Henri Génès
Chief warden of Poissy prison
Yves Barsacq
Warden of Poissy prison
Dominique Zardi
Warden of Poissy prison
Max Montavon
Antique dealer in Le Havre, Jean-François’ partner
Paul Mercey
André, the flooded owner of the 5th floor
Henri Attal
Member of the Colonel's gang
Tommy Duggan
Superintendent Cummings
Sophie Grimaldi
Blonde on the train
Roger Lumont
Boss of the shop
John Rico
Member of the Italian mafia
Arch Taylor
Member of the Italian mafia
Pierre Tornade
Belgian soldier of the armored car (uncredited)
Micha Bayard
André's wife (uncredited)
Gérard Hernandez
Policeman in Le Havre (uncredited)
