On screen
Cast
12 credited performers
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
Artwork unavailable
John King-Kelly
Spy Henchman
Artwork unavailable
Bernard Rebel
Vinson - Spy Henchman
Arnold Marlé
Prof. Leon Dushenko
John Horsley
Det. Sgt. Gibson
Jane Welsh
Supt. McCollum - sanitarium
Aimée Delamain
Mrs. Henley