Inside a quaint convent, young Sister Agnes explodes with an outburst of rage and blasphemy, causing the church to send veteran priest Father Donaghue and a younger priest-on-the-rise, Benjamin, to investigate the incident as a potential demonic possession.

After encountering a ghost in his vacation home, terrified Dan Pappadakis goes behind his wife's back to hire an industrial grade exorcist, the bizarre and needy Os Bijourn. While implementing a variety of increasingly outlandish ghost traps, Os tries to befriend Dan almost as relentlessly as he tries to destroy the home's demons. Dan considers calling the whole thing off, but it quickly becomes apparent that a great evil has embedded itself in his...

Fred Madison is a saxophonist who finds a video tape on his doorstep that shows the interior of his house. He becomes convinced that someone has broken in and calls the police. He finds another videotape showing him killing his wife. The police arrest him for murdering his wife. In prison, he inexplicably morphs into a young man named Pete Dayton and begins living a completely different life. When Pete is released, his and Fred's paths begin to cross...