I watched the first time by myself and then again with my college age son. Liked it both times. Edge of my seat both times. The only thing I would have liked to see that the monster, evil force or whatever the villian was, to be more developed. I still remain a little confused there. Otherwise, I liked the movie. I am a huge Sandra Bullock fan and no one delivers sardonic humor better than her. The dark humor in this movie had some fantastic one liners. Her and Malkovich played off each other fantastically. It was a true thriller if a Movie.