If you think the movies is slow paced, shut the fuck up. For once a movie of this sort allows us to meet and know the main characters, and actually like them for the most part. This causes us to feel really bad when things start happening to them, and it actually becomes horrifying and sad.

But unfortunatley it's very similar to other tortur movies, but at least with this one it isn't over the top and ridiculously stupid, it's based on true events... Kind of, like most movies it's pretty far off from what actually happened, but it stays realistic because it could happen.

I think it is pretty under rated because, people just think it's brutal for the sake of being brutal. But it's not, it works hard to make you beleive that these characters are just good normal people. But unfortunate things happen, which is the horror and the depressing realization of the real world, it's not just asshole teenagers getting killed.