•
Curd Jürgens as Alex •
Peter Ustinov as Michel Kaminsky •
O. E. Hasse as Hugo Vogel •
Sam Jaffe as Sam Cooper •
Paul Carpenter as Le Colonel Howard •
Véra Clouzot as Lucie •
Martita Hunt as Connie Harper •
Gérard Séty as Le docteur Malic •
Gabrielle Dorziat as Madame Andrée - I'infirmière •
Louis Seigner as Valette - le morphinomane •
Pierre Larquey as Le chauffeur de taxi •
Georgette Anys as La buraliste •
Jean Brochard as Le surveillant-général •
Bernard Lajarrige as Le garçon de café •
Dominique Davray as L'Alsacienne •
Daniel Emilfork as Helmut Petersen - un espion • Jean-Jacques Lécot as Le faux contrôleur (as Jean-Jacques Lecot) •
Robert Lombard as Le contrôleur •
Patrick Dewaere as Le petit Moinet (as Patrick Maurin) •
Clément Harari as Victor - le faux garçon de café •
Sacha Pitoëff as Léon (as Sacha Pitoeff) •
Fernand Sardou as Pierre ==External links==