Mysterious writer Janet Frobisher lived alone in a dark English country cottage when she did not flirt with her secretary's fiancee. At an extremely awkward moment, she met an unwelcome visitor: George Bates, who claimed to be Janet's separated husband's criminal partner. Despite Janet's efforts to get rid of George, George still hinted at entering Janet's home and life; The intricacies of relationships have evolved into a terrifying, murderous cat and mouse game.