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