Eli Roth (Cabin Fever, Hostel) produced this satanic possession thriller, which references everything from Rosemary’s Baby to The Omen to The Exorcist and throws in the mockumentary conceit of The Blair Witch Project as well. This self-reflexive obsession with movie artifice mirrors the snake-oil shenanigans of the rakish protagonist, Reverend Cotton Marcus, a fraudulent exorcist with a guilty conscience who agrees to one final performance in order to expose all his tricks (concealed wires, hidden tape recorders) to a two-person documentary crew. Patrick Fabian is charming as Marcus, and director Daniel Stamm delivers a series of surefooted scares as the staged possession turns real. But the movie is still unsatisfying; in its eagerness to deliver familiar genre pleasures, it somehow misplaces its soul.