Watch House of Demons for Free: How to Stream the Movie Online at 123Movies. . Four estranged friends reunite and spend the night in a remote country house that was once home to a Manson Family like cult. As the night goes on, the strange rituals in the house's past open connections between the past, the present and the subconscious, forcing all the characters to confront their deepest secrets and darkest demons, or be destroyed by them.