Lino Ventura as Philippe Gerbier

Paul Meurisse as Luc Jardie

Jean-Pierre Cassel as Jean-François Jardie

Simone Signoret as Mathilde

Claude Mann as Claude Ullman / The Mask

Paul Crauchet as Félix Lepercq

Christian Barbier as Guillaume Vermesch / The Buffalo

Alain Dekok as Legrain

Alain Libolt as Paul Dounat

Jean-Marie Robain as Baron de La Ferté-Talloires

Albert Michel as Gendarme

Georges Sellier as Colonel Jarret du Plessis

Marco Perrin as Octave Bonnafous

Hubert de Lapparent as Aubert

Jeanne Pérez as Marie

Alain Mottet as Camp Commander

Denis Sadier as Gestapo Prison Doctor

Serge Reggiani as Hairdresser

Colin Mann as Dispatcher

Anthony Stuart as Royal Air Force Major

Gérard-Antoine Huart as Prisoner

Percival Russel as German Soldier

Michel Dacquin as Condemned

Jacques Marbeuf as German Officer

Marcel Bernier as Customs Adjutant

Gaston Meunier as Baggage Checker

Pierre Vaudier as

Nathalie Delon as Jean-François' Friend (uncredited)

Jacques Léonard as War Camp Prisoner (uncredited)