I can't believe that some people have given this a 10 star rating. The story is dreadful with the scary monster never being seen just alluded to. It's just a film about killing and suicides. It's not frightening it's just annoying. It's possibly the worst film I've seen Sandra Bullock and she is one of my favourite movie stars. There are so many questions unanswered in it and lots of crazy errors. For instance no one's hair grows that length in five years? It just wasn't a credible movie at all.