Discover
Merle Oberon
Kitty Langley
Laird Cregar
Mr. Slade
George Sanders
Inspector John Warwick
Cedric Hardwicke
Robert Bonting
Sara Allgood
Ellen Bonting
Aubrey Mather
Superintendent Sutherland
Queenie Leonard
Daisy the Maid
Doris Lloyd
Jennie
David Clyde
Det. Sgt. Bates
Helena Pickard
Annie Rowley
Ruth Clifford
Hairdresser (uncredited)
Thora Hird
First Murder Victim Katie (uncredited)
Anita Sharp-Bolster
Wiggy (uncredited)
C. Montague Shaw
Stage Manager (uncredited)
Skelton Knaggs
Man with Cart
Charlie Hall
Comedian
Bess Flowers
Woman in Audience
Olaf Hytten
Harris, the Haberdasher
Joan Bayley
Undetermined Secondary Role
Camera
Lucien Ballard
Director of Photography
Directing
John Brahm
Director
Editing
J. Watson Webb Jr.
Editor
Production
Robert Bassler
Producer
Sound
Hugo Friedhofer
Original Music Composer