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.

Laurence Payne
as Norman Martell

Patricia Dainton
as Helen Martell

Jane Griffiths
as Peggy Hill

Edward Underdown
as Dr. Peter Murdoch

John Arnatt
as Supt. Ross

Humphrey Lestocq
as Simmons, the Producer

Lucy Griffiths
as Miss Potter

Olive Milbourne
as Mrs. Booth

Arthur Hewlett
as Marshall

Annette Kerr
as Cinema cashier
CinemaSerf
This is quite an intriguing murder mystery about a vain composer ("Norman") who has an affair with his sister-in-law ("Peggy"). When she becomes pregnant his wife ("Helen") refuses to divorce him so he and his mistress set about devising a cunning plan to be rid of her. It's quite a simple story, bu...