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 … Laurence Payne, Patricia Dainton, Jane Griffiths, Edward Underdown, Humphrey Lestocq, Lucy Griffiths, Olive Milbourne Added on Amazon Prime 2023-02-08.