Luigi Pistilli
ex-Inspector John Norton
Dagmar Lassander
Helene Sobieski
Anton Diffring
Ambassador Sobieski
Arthur O'Sullivan
Inspector Lawrence
Werner Pochath
Marc Sobieski (as Werner Pochat)
Dominique Boschero
Ambassador Sobieski's mistress
Renato Romano
Mandel, the chauffeur
Sergio Doria
Walter
Ruth Durley
Norton's mother
Valentina Cortese
Madame Sobieski
Emmet Bergin
Man in café (uncredited)
Niall Tóibín
Doctor (uncredited)
