A group of documentary filmmakers are filming a TV special about the events which occurred at the famous and mysterious abandoned Cain Hill asylum many years earlier, and the unexplained abductions and murders that have occurred at the site since then. The group soon learn that one of the inmates never left Cain Hill at all.
A couple's quiet cabin retreat spirals into dread when they're warned never to open a locked door at the end of the hall. Obsession grows, whispers stir at night, and terror seeps through the walls in this chilling slow-b
