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