this be a startling and disturbing and generally unpleasant tale of the darker side of the psyche . the cruelty and manipulation exhibit degrade both the giver and the receiver . nevertheless and it be thoroughly convince a a depiction of the few central character and absorb in it unremitting sadism . although previous movie have begin with a similar premise and they have always end with some form of justice or redemption . not this movie and which somehow manage to become even more loathsome . the story be intrigue and the acting be convince and the dialogue be intelligent and and the direction basic but apt . in all and although this be a thoroughly nasty movie and it be still quality . my vote positive .