Franck, a door-to-door salesman married to Jeanne, is looking for a customer who owes money when he meets Mona, a seventeen-year-old who lives with her rich and hateful aunt. Franck's wife leaves and his boss has him arrested for embezzlement. But Mona pays back the money and suggests he kill her aunt to get hold of her fortune... Alain Corneau's 1979 adaptation of Jim Thompson's novel A Hell of a Woman.