A very interesting idea that goes wasted because of the enormity and abundance of glaring plot holes. I like the characters, but not at how some of them dies for no reason. I also like the idea that one of them is the killer, but not how the film completely ignores the need to create suspense. In the end, the movie is stuck in the abyss of "what could have been". The cliched moment at the very end is also unnecessary and tackless.