A scheming widow tries to persecute three old ladies, but fate takes its revenge on her.

The film follows the history of a brooch after it is given as a present by a man to a woman in 1911.

Scotland Yard is thrown into an uproar when a mad killer begins knocking off beautiful young blondes.

Tom Masterick, a dock worker, is wrongfully convicted of a murder charge. His death sentence is commuted to a long prison term. When released as an old man, he vows to find the real killer.

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.