A masked killer stalks an institution for mentally disturbed rich women.
Dr. Francis Clay
Cheryl Hume
Anne Palmieri
Professor Osterman
Ruth
Nurse Helen
Chaffeur
Policeman
Inspector
Nurse
Ruth's Husband
Policeman
Dr. Francis Clay
Cheryl Hume
Anne Palmieri
Professor Osterman
Ruth
Nurse Helen
Chaffeur
Policeman
Inspector
Nurse
Ruth's Husband
Policeman