Factual error: In the first scene of the film the girls are shown in a flashback playing with the Ouija board. When one of them holds the planchette up to the other one, the underside of it has text saying "© 2013" molded into the plastic, even though the scene is based years before that. (00:01:20)
Continuity mistake: Toward the end of the movie, when Sarah joins Laine in her room, Laine's arm is on the back of the couch; but right after Sarah sits down next to her, Laine takes her arm and puts it on the back of the couch.
Other mistake: While exploring the attic, Lane sees a yellow chair in the attic. Trouble is the attic opening is much too small for that size of chair to have gotten through.
