An attempt to update the demonic possession horror sub genre. It's not a film that works particularly well mainly because it posits that demonic possession is a fairly routine event whereas the impact of such stories is that they are extraordinary in nature. The fact that Guy Pearce stars here is what makes the film appealing but he fails to raise it enough to make it memorable. He plays Father Peter, a cynical and world weary priest who once as a young priest took part in a traumatic exorcism and now is the Roman Catholic Church's number one demon hunter. He's tasked with training young priest, Daniel (Vadhir Derbez) in the art and they have to deal with a young boy who murdered his family with an axe. There's a twist in the tale that signposts itself a bit too easily so overall this is an underwhelming film.