Directionless teenager Susanna is rushed to Claymoore, a mental institution, after a supposed suicide attempt. There she befriends a group of troubled women who deeply influence her life.

A psychiatrist awakens as a patient in a mental institution, with no memory of the murder she's accused of committing. As she tries to regain her memory, a vengeful spirit manipulates her.

Three friends plan to pull off a simple robbery and go on the run.

Security guard David Dunn uses his supernatural abilities to track Kevin Wendell Crumb, a disturbed man who has twenty-four personalities.

Fifteen years after the original film, the philosophical Lieutenant William F. Kinderman is investigating a baffling series of murders on Georgetown that all contain the hallmarks of The Gemini, a deceased serial killer. His investigation eventually leads him to a catatonic patient in a psychiatric hospital who has recently started to speak, claiming he is The Gemini and detailing the murders, but bears a striking resemblance to Father Damien Karras.