Oliver Reed as Hugh Lombard

Elke Sommer as Vera Clyde

Richard Attenborough as Judge Arthur Cannon

Stéphane Audran as Ilona Morgan

Gert Fröbe as Wilhelm Blore

Herbert Lom as Dr. Edward Armstrong

Maria Rohm as Elsa Martino

Adolfo Celi as General André Salvé

Alberto de Mendoza as Otto Martino

Charles Aznavour as Michel Raven

Orson Welles as Voice on Tape

Naser Malek Motiee as Inspector

Rik Battaglia as Rick Battaglia/Vendedor

Teresa Gimpera as Maria

Sepideh as Inspector's Girlfriend