A group of friends staying at a mountain house have their fun suddenly interrupted by a knock at the door.

When his daughter, Angela, and her friend Katherine, show signs of demonic possession, it unleashes a chain of events that forces single father Victor Fielding to confront the nadir of evil. Terrified and desperate, he seeks out Chris MacNeil, the only person alive who's witnessed anything like it before.

After consulting a psychiatrist about his eerie visions, a workaholic businessman decides to take his family on a trip. However, things go on an unexpected route as they set out on the journey.

While looking for a house, Tom and Gemma get stuck in a maze of identical houses. As they try to figure out a way to escape, they receive a package containing a child and are asked to raise him.

After waking up in a suburban house with no memory, a man must evade a demonic presence while following the clues left for him to discover his past.

After witnessing a bizarre, traumatic incident involving a patient, Dr. Rose Cotter starts experiencing frightening occurrences that she can't explain. As an overwhelming terror begins taking over her life, Rose must confront her troubling past in order to survive and escape her horrifying new reality.