Cast
Leslie Banks
Dr. Manetta
Lilli Palmer
June Lansdowne
Cathleen Nesbitt
Ann Cody
Gina Malo
Glenda Baker
David Horne
Edward Havelock
Romilly Lunge
Dick Martin
Richard Bird
Inspector Cornelius 'Andy' Sneed
J.H. Roberts
Luis Silva
Aubrey Mallalieu
Lord Charles Francis Selford
Harry Hutchinson
Bevan Cody
Phil Ray
Tom Cawler
George Street
Chief Commissioner
Ross Landon
John Selford
Raymond Mander
P.C. in Sneed's Office (Uncredited)
Charles Paton
Handwriting Expert (Uncredited)
George Street
Chief Commissioner (Uncredited)
Crew
Hamilton G. Inglis
Production Manager
(Production)
Norman Lee
Director
(Directing)
John Argyle
Producer
(Production)
Ted Richards
Editor
(Editing)
C. Gilbert
Art Direction
(Art)
Ernest Palmer
Director of Photography
(Camera)
Alex Bryce
Director of Photography
(Camera)
Edgar Wallace
Novel
(Writing)
F. McNally
Sound Recordist
(Sound)
Guy Jones
Music Director
(Sound)
Ronald Anscombe
Camera Operator
(Camera)
Gilbert Gunn
Screenplay
(Writing)
Harry Benson
Sound Supervisor
(Sound)
Norman Lee
Screenplay
(Writing)
Roy Parkinson
First Assistant Director
(Directing)
Guy Jones
Original Music Composer
(Sound)