Walter Forde
Director
Edgar Wallace
Novel
Angus MacPhail
Writer
Sergei Nolbandov
Writer
Roland Pertwee
Writer
Michael Balcon
Producer
S.C. Balcon
Associate Producer
Ernest Irving
Music
Ronald Neame
Director of Photography
Charles Saunders
Editor
Wilfred Shingleton
Art Direction
Hugh Sinclair
Humphrey Mansfield
Griffith Jones
James Brodie
Francis L. Sullivan
Leon Poiccard
Frank Lawton
James Terry
Anna Lee
Ann Lodge
Alan Napier
Sir Hamar Ryman M.P.
Basil Sydney
Frank Snell
Lydia Sherwood
Myra Hastings
Edward Chapman
B.J. Burrell
Athole Stewart
Police Commissioner
George Merritt
Inspector Falmouth
Garry Marsh
Bill Grant
Ellaline Terriss
Lady Willoughby
Roland Pertwee
Mr Hastings
Eliot Makeham
Simmons
Frederick Piper
Pickpocket (uncredited)
Henrietta Watson
Mrs. Truscott
Jon Pertwee
Rally campaigner (uncredited)
Liam Gaffney
Taxi driver (uncredited)
Manning Whiley
(uncredited)
Neal Arden
(uncredited)
Basil Radford
(uncredited)
Edward Rigby
(uncredited)
Paul Sheridan
(uncredited)
Winston Churchill
Self (archive footage) (uncredited)
Arthur Hambling
Constable Benham
Bryan Herbert
Taxi driver (uncredited)
Adolf Hitler
Self (archive footage) (uncredited)
James Knight
Policeman Outside Parliament (uncredited)
Percy Parsons
American Broadcaster (uncredited)
Charles Paton
Platform Speaker (uncredited)
Percy Walsh
Prison Governor (uncredited)
