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