A composer (Laurence Payne) is stuck in a middle-class marriage and finds that his affair with his wife's half-sister (Jane Griffiths) has resulted in a pregnancy. When his wife refuses to give him a divorce he hatches a murder scheme that is too clever by half.
Norman Martell
Helen Martell
Peggy Hill
Dr. Peter Murdoch
Supt. Ross
Simmons, the Producer
Miss Potter
Mrs. Booth
Marshall
Cinema cashier
Cleo
Rehearsal Pianist (Uncredited)
Cinema sales girl (uncredited)
Det. Sgt. Fred Smith (uncredited)
Patrol car policeman (uncredited)
P.C. Williams (uncredited)
Sleeping Man in Theater (uncredited)
Detective Examining Tape-Recorder (uncredited)
Cinema manager (uncredited)
Det. Sgt. Carter (uncredited)
Detective / Fingerprints Officer (uncredited)
