Harry Powell marries and murders widows for their money, believing he is helping God do away with women who arouse men’s carnal instincts. Arrested for auto theft, he shares a cell with condemned killer Ben Harper and tries to get him to reveal the whereabouts of the $10,000 he stole. Only Ben’s nine-year-old son, John and four-year-old daughter, Pearl know the money is in Pearl’s doll and they have sworn to their father to keep this secret.