Spanish horror thriller written and directed by Narciso Ibáñez Serrador. Headmistress Fourneau (Lilli Palmer) is a harsh disciplinarian, regularly subjecting the girls at her boarding school to beatings and whippings. When Teresa (Cristina Galbó) arrives at the school, she is immediately on guard, feeling like she is being watched. Upon learning that students have been disappearing, she is determined to escape. John Moulder-Brown and Mary Maude also star.