New York police officer Ralph Sarchie, struggling with his own personal issues, begins investigating a series of disturbing and inexplicable crimes. He joins forces with an unconventional priest, schooled in the rituals of exorcism, to combat the frightening and demonic possessions that are terrorizing their city. Based upon the book which details Sarchie's bone-chilling real-life cases.

Based on the book by Ralph Sarchie and Lisa Collier Cool. Special features: Deliver us from demons; the demon detective; the two sergeants; Illuminating evil: making Deliver us from evil; commentary with filmmaker and cast.