This movie is nothing short of a masterpiece. As I watched it I noticed myself on the edge of my seat for just about the whole thing. It truly nails what its trying to be and a whole lot more as a horror movie. The characters felt so natural that I got sucked in to the story, almost forgetting the real world. It kept on managing to surprise me from the kids getting shocked in the hot-tub to one of them getting turned into a llama and then the dad swooping in and making the ultimate sacrifice to save the day, just perfect. I recommend this movie to just about everyone no matter what genre you like because without a doubt in my mind this movie will go down in history.