The Third Alibi

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.

• Montgomery TullyDirector
• Maurice J. WilsonScreenplay
• Montgomery TullyScreenplay
• Don BanksOriginal Music Composer

• Laurence PayneNorman Martell
• Patricia DaintonHelen Martell
• Jane GriffithsPeggy Hill
• Edward UnderdownDr. Peter Murdoch
• John ArnattSupt. Ross
• Humphrey LestocqSimmons, the Producer
• Lucy GriffithsMiss Potter
• Olive MilbourneMrs. Booth
• Arthur HewlettMarshall
• Annette KerrCinema cashier
• Cleo LaineCleo
• Dudley MooreRehearsal Pianist (Uncredited)