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