Satan's School for Girls

A scared woman, Martha Sayers, drives to Los Angeles to the house of her sister Elizabeth. On the arrival, the caretaker gives the house's key to her, and she locks herself in the house. When Elizabeth arrives, she sees the police and finds Martha hanging on the ceiling. The police close the case as suicide, but Elizabeth refuses to accept that her sister traveled to Los Angeles to commit suicide. She decides to join the Salem Academy in Massachusetts where Martha studied, despite the warnings of her former roommate Lucy Dembrow. She uses an alias of Elizabeth Morgan to be not identified as her sister and is welcomed by Roberta Lockhart, Debbie Jones and Jody Keller. Then she has an interview with the headmistress Mrs. Jessica Williams and is assigned to have classes with Dr. Joseph Clampett and Professor Delacroix. Soon she notes that weird things are happening in the school, and she suspects that the strange Professor Delacroix is the responsible. Elizabeth confides to her roommate Roberta, and she decides to help her in the investigation, with surprising results.