Michael Caine as Henry

Giovanna Ralli as Fe

Eric Portman as Moreau

Nanette Newman as The Girl

Vladek Sheybal as Dr. Delgado

Emilio Rodríguez as Police Captain

David Buck as Salinas

Carmen Dene as Masseuse

Geraldine Sherman as Receptionist

Leonard Rossiter as Fillmore

Reg Howell as Spanish Chauffeur

John Barry as Orchestra Conductor

Renata Tarragó as Solo Guitarist

Carlos Pierre as Antonio

Santiago Rivero as Armed Guard

George Ghent as Stresemann (uncredited)