Mózg

Bourvil

Anatole

David Niven

Colonnel Carol Matthews, aka 'Le Cerveau'

Dominique Zardi

Warden of Poissy prison

Eli Wallach

Frankie Scannapieco, godfather of the Italian mafia

Fernand Guiot

Inspector Mazurel, assistant to the commissioner

Gérard Hernandez

Policeman in Le Havre (uncredited)

Henri Attal

Member of the Colonel's gang

Henri Génès

Chief warden of Poissy prison

Jacques Balutin

Inspector Pochet

Jacques Ciron

Inspector Dubœuf

Jean-Paul Belmondo

Arthur Lespinasse

John Rico

Member of the Italian mafia

Mario David

Jean-François, antique dealer in Le Havre

Max Montavon

Antique dealer in Le Havre, Jean-François’ partner

Micha Bayard

André's Wife (uncredited)

Patrick Préjean

Belgian Sergeant of the armoured car

Paul Mercey

André, the flooded owner of the 5th floor

Pierre Tornade

Belgian Soldier in Armored Car (uncredited)

Raoul Delfosse

Belgian soldier of the armored car

Raymond Gérôme

Commissioner

Robert Dalban

Belgian soldier of the armored car (with a cold)

Roger Lumont

Boss of the shop

Silvia Monti

Sofia Scannapieco, Frankie's sister

Sophie Grimaldi

Blonde on the train

Tommy Duggan

Superintendent Cummings

Yves Barsacq

Warden of Poissy prison