Patrick Dewaere as Paul Kerjean

Michel Auclair as Michel Saint-Claude

Caroline Cellier as Hélène Kerjean

Charles Denner as Walter, le détective

Anny Duperey as Laura Weber

Jeanne Moreau as Madame Benoît-Lambert

Mel Ferrer as Cornelius A. Woaegen

Jean-Laurent Cochet as Hartmann

Fernand Ledoux as Guérande

André Falcon as Pierre Bayen

Claude Vernier as Dr. Kramer

Édith Scob as Madame Bronsky

Jacques François as Fred Great

Robert Party as Jacques Benoît-Lambert

Jean-Pierre Kalfon as l'informateur

Jean Mercure as Holstein

Claude Marcault as la sécretaire de Kerjean

Jacques Maury as Jack Sleiter

Jacqueline Doyen as Arlène Robert

Marc Eyraud as Sylvestre

Jean Claudio as Vittorio Orta

Anthony Stuart as

Hans Verner as Kurt von Schroeder

Claude Vernier as Docteur Kramer

Edward Marcus as

Pierre Londiche as

Camille Clavel as

Edmond Bernard as Ralph von Lübeck

Frédérique Meininger as

François Viaur as L'employé de l'hôtel

Marie-Pierre Casey as

Jacques David as

Marc Fayolle as

Yaseen Khan as

Roger Comte as

Marie-Christine Rolland as