Cast
Stuart Saunders
Cinema manager (uncredited)
Laurence Payne
Norman Martell
Cleo Laine
Cleo
Dudley Moore
Rehearsal Pianist (Uncredited)
Max Faulkner
Det. Sgt. Fred Smith (uncredited)
Patricia Dainton
Helen Martell
Edward Underdown
Dr. Peter Murdoch
Arthur Hewlett
Marshall
Jane Griffiths
Peggy Hill
John Arnatt
Supt. Ross
Humphrey Lestocq
Simmons, the Producer
Lucy Griffiths
Miss Potter
Annette Kerr
Cinema cashier
Pat Ryan
Detective Examining Tape-Recorder (uncredited)