The Nanny is a 1965 British psychological horror thriller film directed by Seth Holt and produced by Hammer Film Productions. It stars Bette Davis, Wendy Craig, and Jill Bennett, and was adapted by Jimmy Sangster from the 1964 novel of the same name by Evelyn Piper (a pseudonym for Merriam Modell). The film was scored by Richard Rodney Bennett and shot at Elstree Studios.

Plot

After being blamed for the drowning death of his younger sister Susy, ten-year-old Joey is sent to a school for emotionally disturbed children. Two years later, he returns home, still harboring deep mistrust toward the family's longtime nanny. Joey suspects she may have played a role in Susy's death and now believes she intends to poison him. He refuses to eat food she prepares, abandons the room she decorates for him, and insists on locking his door and making her promise not to enter the bathroom while he bathes.