Richard Conte
Bill Locklin
Rona Anderson
Julia Jackson
Russell Napier
Supt. John Harrington
?
Sylva Langová
Hilde Heller, chief spy
Colin Gordon
Harry Martin - reporter
Donald Bisset
Editor Harris
?
John King-Kelly
Spy Henchman
?
Bernard Rebel
Vinson - Spy Henchman
Arnold Marlé
Prof. Leon Dushenko
John Horsley
Det. Sgt. Gibson