Joachim Fuchsberger (Johnny Gray), Eddi Arent (Dr. Higgins), Hans Clarin (Mr. Igle), Karin Dor (Denise), Richard Häussler (Joe Legge), Kai Fischer (Pia Pasani), Walter Rilla (Sir Robert Marney), Siegfried Schürenberg (Sir John), Benno Hoffmann (Blackstone-Edward), Bruno W. Pantel (Sergeant Horse), Kurd Pieritz (Inspektor Terrence), Jur Arten (Gangster Jakob), Arthur Binder (Slim), Erik Radolf (Ambrose), Elfi Estell (Wanda), Rena Horten (Blondine), Renate Huette (Blondine), Eberhard Junkersdorf (Rasiermessermörder), Valentin Klaus (Blockstellenwärter), Manfred Meurer (Gangster), Tino Meurer (Kellner)