....skip the middle 50 minutes and watch the last 25. You won't miss anything while saving about an hour of your life from being completely wasted. Even just watching the setup and the "payoff" is not a productive use of your time - as this is not a very good film. It is ugly, bleak and lame. It has nothing interesting or new to say about its topic. And its formulaic attempt at generating tension and shock is puerile and tiresome.
