While attempting to run away from the Ravenscroft Reform School, a teenage girl is shockingly caught and dragged away to an unknown fate by an unseen assailant. The next day a young science teacher, Janet (Karen Witter) arrives to start her new job. She has been drawn to Ravenscroft by its idealistic and charismatic director, Gary (Robert Vaughn). Janet soon begins having strange hallucinations of someone trapped behind a brick wall, trying desperately to get out. She turns for help to the school psychologist, Dr. Schaeffer (Donald Pleasence). He assures her that her imagination is just a little over-active Janet befriends one of the girls, fingers (Nia Long), who tells her about the parties in the basement. When more girls "run away" Janet explores the basement and has a terrifying hallucination of an old man, Jacob, (John Carradine) bursting through a brick wall to attack her.