The movie had an interesting concept I will give it that, and that really makes me wish the movie was good, because I think it could be a really interesting movie. Unfortunately it was not good. As you will see in a lot of other reviews, this movie got very boring very quickly, and it just dragged on. It was a 15 minute short story dragged into an excruciatingly long and painful 2 hour movie. The story is just dragged out, and not very interesting. The characters aren't very interesting either, and we don't really get to know them. The plot could have been so much more interesting, but they never explain what's causing people to go crazy, or why it's doing that. It's just some thing trying to kill them and that is all they tell you. There's no depth to the plot, no explanation, nothing. It's very bland and simple and it ruins the movie. The acting is ok, nothing special. But it just goes on and on, and the ending leaves so many unanswered questions, basically nothing is explained. Don't waste your time.