I have so many negative things to say about this movie. First off, I went to Wikipedia to look up the night hag or whatever, and it’s the exact same page they show in the movie, and it says on that damn page what people used to do to protect themselves and their kids from it. Second, after the sleep study incident, it’s evident when she comes back to work that NO ONE watched the video from that night in the entire period that she was gone?? Even though the police came and arrested the dad? The police didn’t watch it? And at no point was possession mentioned as something the hag does, but all of a sudden, when convenient for the horrible plot, it can possess the old dude?? And for some reason stabbing HIM defeated it??? This movie was horrible, and I DO NOT recommend it for anyone.