This is the kind a movie I can't bear, the whole script rests on a main character who artificially postpones action in order to complete an hour and a half movie. I have the same feeling than watching Straw Dogs. As other comment says: "your guarding a bunch of helpless children from a known psycho, and a very suspicious stranger shows up when you are out in the middle of no where, you take him away from the house and you shoot him and then you shoot him again". You know the guy should shoot the bad guy from the very beginning, and there is no reason no to do so, you know and he knows... but we have to complete a movie.
The main character is also incoherent with his purpose of protecting the kids, leaving them alone, and breaking the unity of the family group. The action is done against basic human rules of behavior.
The acting is OK, is the writing and the whole movie concept that doesn't work.
