As someone who has experienced sleep paralysis countless times, I can say the ordeal is extremely terrifying. The concept & real life experiences could have made this a very decent movie, but it completely missed the mark. This movie doesn't even deserve one star, but I that's the lowest I could rate it. I wasn't expecting one of the greatest movies ever made, but I at least thought I would have a jump moment, feel tension, anything. I just found myself checking to see how much time was left.