Diễn viên
Claudio Brook
Robert Foster
Jess Hahn
Boris
Yves Vincent
Felton
Goffredo Unger
Daniela Bianchi
Arabella
Sydney Chaplin
Inspector Chandler
Harriet Medin
Dr. Evans' assistant
Pietro Torrisi
Claudio Ruffini
John Bartha
Hotel Detective (uncredited)
Paolo Gozlino
Gordon Smash
Guido Lollobrigida
Bill Vanders
Newspaper Editor (uncredited)
Stefania Careddu
Katia
Andrea Bosic
Diplomat
Claudio Biava
Gino Turini
John Karlsen
Photographer in Nightclub (uncredited)
Jacques Herlin
Actor at recital
Aldo Cecconi
Valentino Macchi
Bruno Bertocci
Uomo in radazione (uncredited)
Nazzareno Zamperla
Flash
Anthony Dawson
Dr. Evans
Raymond Bussières
Train conductor
Tina Aumont
Dolly
George Wang
Chang
Pietro Ceccarelli
Gang Member