Must say that even if we consider different comprehension of the word 'horror' this will hardly be a horror movie. Rather a drama of a prisoner in unusual prison, I would say. Movie has a great style, very good color of an appropriate ambient set in a movie and some great acting. Good casting and pretty convincing characters, must say. What I did not like about this movie is too slow plot development. A carefully developed plot followed by the slow rhythm truly serves the idea of a main character transformation implied, but still brings too uniformed pace and if you ask me - the one can become sleepy with repeating patterns of this long film culmination.