The Nanny is a 1965 suspense film directed by Seth Holt and starring Bette Davis as a devoted nanny caring for a ten-year-old boy recently discharged from a home for disturbed children. It is based on the novel of the same name by Evelyn Piper (a pseudonym for Merriam Modell), and the film was scored by Richard Rodney Bennett.
Ten year old Joey Fane returns home from the special school he has attended since the death of his toddler sister. But at home he creates a terrible fuss, moving from the bedroom Nanny has prepared for him to one with a strong lock and access to the fire escape, refusing to eat anything Nanny cooks and adamant that Nanny shall not come near him. He even accuses Nanny of trying to kill him. Nanny runs the Fane household, but in practice infantilizes the women of the Fane family. Everyone assumes Joey is deeply disturbed and dangerous, but it emerges he is quite right to be afraid of Nanny.