I really liked the movie, it contains quite a surprise. I cant say that it happens loads in it, but it kept me interested anyway. Could be thanks to the acting.
However, I would like a better explaination about the ending.
Will he just hide in that house, start a new life there, become a serial killer (but maybe bad men are the victims). Or..what. I understand that he probably should hide, cus he killed his dad. But he looked suspicious at the end..as if he checked out how the door worked so he knows about it til he brings someone there. I wanna know! But I guess that's sort of a good ending too..opens up for a #2 if they feel like it.