Peggy has just recovered from a nervous breakdown when, just before her newly wed husband, Robert, takes her to his school, she is attacked by a man. Although the cottage where they are to live is charming, Peggy has an uneasy feeling about the school. Peggy meets the headmaster, Michael, and his wife Molly. Then again she is attacked by a man who has only one arm. Fleeing to the school - where it sounds as if all the boys have been assembled - she discovers that the classrooms are in fact deserted ...