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