The Third Alibi

The story

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.

Cast & crew

Laurence PayneNorman Martell

Patricia DaintonHelen Martell

Jane GriffithsPeggy Hill

Edward UnderdownDr. Peter Murdoch

John ArnattSupt. Ross

Humphrey LestocqSimmons, the Producer

Lucy GriffithsMiss Potter

Olive Milbourne

Olive MilbourneMrs. Booth

Arthur HewlettMarshall

Annette KerrCinema cashier

Cleo LaineCleo

Dudley MooreRehearsal Pianist (Uncredited)