I have seen more than 3500 movies in my life so far and this is easily the most horrible one. I won't describe what happened but it is just terrible. Compared to this, 'Saw' or 'Hostel' are like Disney movies. i must say that the beginning is rather slow and innocent but it makes the shocking ending even more effective. In my opinion, it is not only horrible but it has also a fascinating story and the whole thing is rather spellbinding. To conclude, it is one of my favorite movies and it is de finitely worth a look.