This thriller is quite well acted and cast. The story isn't complicated. A young woman suspects her mother's toy boy who rents a room from her isn't all that great. It isn't that far off. Some single parents both fathers and mothers can be that blind when they get infatuated much to the consternation of their kids. The psycho is obvious from the beginning no twists here. But the story is well paced and well told and not ridiculous. The psycho is well played by James Maslow. Couple of minus points. Not much insight into why he was like that. Also not much follow up on the victims. Straightforward story but well done.