演职人员
Norman Martell
Laurence Payne
Helen Martell
Patricia Dainton
Peggy Hill
Jane Griffiths
Dr. Peter Murdoch
Edward Underdown
Supt. Ross
John Arnatt
Simmons, the Producer
Humphrey Lestocq
Miss Potter
Lucy Griffiths
Mrs. Booth
Olive Milbourne
Marshall
Arthur Hewlett
Cinema cashier
Annette Kerr
Cleo
Cleo Laine
Rehearsal Pianist (Uncredited)
达德利·摩尔
Cinema sales girl (uncredited)
Sylvia Davis
Det. Sgt. Fred Smith (uncredited)
Max Faulkner
Patrol car policeman (uncredited)
Garard Green
P.C. Williams (uncredited)
Arthur Howell
Sleeping Man in Theater (uncredited)
Richard Neller
Detective Examining Tape-Recorder (uncredited)
Pat Ryan
Cinema manager (uncredited)
Stuart Saunders
Det. Sgt. Carter (uncredited)
Arthur Skinner
Detective / Fingerprints Officer (uncredited)
John Tatham