I really don't get the people who describe this movie as a must-see. I did not enjoy it at all. The basic concept of the movie was great that's why I wanted to watch it in the first place but the way they developed this concept... maaan. I totally understand that horror movies aren't supposed to be based on logic but at least to some extent they should make sense. And it just gets worse as it proceeds I mean just when you think it can't get any worse it proves you wrong.