The Barretts' normal suburban New England life is torn apart when their teenage daughter shows signs of acute schizophrenia, reluctantly leading them to be the subjects of a reality show. 15 years later, Merry faces her haunting past.

The Barrett's normal suburban New England life is torn apart when their teenage daughter shows signs of schizophrenia, leading them to be the subjects of a reality show, "The Possession." 15 years later, the younger sister faces her family's haunting past when a journalist is assigned to help tell her side of the story and uncovers the very nature of evil.