The horrifying true story of Ed Kemper, a cunning and sadistic serial killer shaped by childhood abuse, whose charm masked his grotesque obsession with murder, mutilation, and the ultimate act of revenge on his mother.
When his child is possessed by an unrelenting evil, a father hires three expert exorcists to purge the demon and save his family. But this demon is merely the gatekeeper to a true hellion that will be unleashed on earth if the trio of exorcists fail.