Ghostkeepers (2012)

Welcome to the house where Evil was born. A mysterious house holds the secrets and horrors of a disparate group of people when the cast of a cult horror movie reunite at the film's location for a celebration of its success. Soon they get more than they bargained for when the gathering unintentionally unleashes a supernatural terror which not only threatens the very sanity of those in attendance but their lives as well. Can they survive a horrifying night of ghosts, demonic possessions, murder and revenge? Can anyone survive a night in Marlowe House, the house where evil was born?