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