James Tont aka Giacomino Tontonati
Helen Collins
Mr Street
Clarissa
Glenda
Y
The Head of Secret Intelligence Service
Corcos
The Russian Spy
Lopez
Jack Glifford
Fisherman
The Head of the Conference for Secret Agents
Miss Hari (as Sara Tonini)
Von Bergen
The Professor
The Nightclub Owner
Mr. Street's Subordinate (uncredited)
Man at Congress (uncredited)
The Egyptian Spy (uncredited)
Nurse (uncredited)
Woman at the Conference for Secret Agents (uncredited)
Mr. Street's Henchman (uncredited)
Colonel Gérard (uncredited)
Man into the Space Centre (uncredited)