Very well done, at least in most parts. The technical and acting performance / implementation is done well, it can think of nothing negative to. The pre-guiding and initiating events `The Purge`, which forms the basis for the story is well done. So is the question of official aid `how can we best inform the police and get help?` Totally excluded. The questions raised by the film are quite exposed via news on TV and the family ... At the end of the film is then more and more predictable. So 4 1/2 stars. However, I was pleasantly surprised.