Sometimes the door to the other side swings both ways.  Sometimes lost, lonely and vengeful spirits return to taunt the living, in ways unimaginably diabolical and cunning. The strength of their power and deception can leave people grasping for answers, and often they turn to paranormal investigators to protect them from the supernatural forces wreaking havoc in their lives.   At the risk of falling victim to the darkness themselves, these investigators, exorcists and demon chasers use whatever tools they possess to rid the victims of the evil that surrounds them. These four tales of the unexplained, each one a true story of possession and redemption, are documented with recreations and interviews with the subjects and paranormal investigators themselves.  As these stories show, no one is immune to the frightening powers of the supernatural, and life and death are much more intertwined than we can know.