If you're very lighthearted, you should not watch this movie. It has some pretty horrible scenes I had to look away from. The story is basically a typical revenge story, but in a way I haven't seen yet. It goes back and forth between the two main characters, keeping the suspense really high and managing to surprise the viewer again and again. The acting was really good and seemed natural. Everything looked extremely real. It stayed on the high suspense level up until the ending which was amazing in itself. The title definitely fit. Overall, a great movie for fans of the genre but definitely not something I'm going to watch again.