Wow well it's totally thrilling, the feeling of waking up six feet is not exactly pleasing and for a person who may have once been locked up or confined to a place, this would certain bring gory memories to their minds, however I think it's fair to note that the film is captivating, every second seems to count, the makers made it very suspenseful and that's one major thing I like about a movie .
My rating says 8/10 a fine movie indeed.