I have never been so afraid of something that I couldn't see before. At first I thought it wasn't going to be worth by money because of the slow beginning, but I suppose a good documentary type filming would start like that. When the action started though the entire audience was clinging to each other. I was still in terror shock, all the 30minutes home plus some. It was so scary that at one part I actually screamed in the theatre and I try to never do that....You should go see it!