"Rec"'s final chapter is really disappointing. The first two films of the saga were interesting especially for the fact that mockumentary was the technique and the narrative strength of the story; in Rec 3 we see that this particular expedient is progressively abandoned, and all of the effectiveness of the film is lost. Rec 3 is the worst among the four movies, and the fourth chapter manages to create an horror movie better built and without too much meaningless splatter. But the result is still disappointing: bad acting; unfocused moral positions of the characters; too easy final. And, mainly, the total loss of the mockumentary, that was all that made the series, at first, interesting.