Elenco
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
Jane Welsh
Supt. McCollum - sanitarium
Aimée Delamain
Mrs. Henley
Equipe
Ken Hughes
Screenplay
Ken Hughes
Director
James Eastwood
Screenplay
Geoffrey Muller
Editor
Jim O'Connolly
Production Manager
Eric Maschwitz
Story
Inman Hunter
Editor
Alice McLaren
Wardrobe Master
Fred Ruff
First Assistant Director
John Smith
Second Assistant Director
Josef Ambor
Director of Photography
Dick Smith
Sound Supervisor
Bob Penn
Still Photographer
Jack Craig
Makeup Artist
Sidney Rider
Sound Recordist
Dick Smith
Sound Recordist
Ron Robson
Camera Operator
Betty Parry
Continuity