This movie is a realistic horror-movie. This movie learns us about the nightclubs, secret bars for homosexuals and the whores in a big French (supposedly Paris) city. Those are all subjects not worth making a movie of it (a TV-documentary could be interesting as a curiosity). Marcus (Vincent Cassel) is at the pursuit of the author of the violent rape (Mourad Khima) of his girl-friend Alex (Monica Bellucci). He is apparently hiding in the closed circles of underground-bars for homosexuals. The problem is that the time-order of the movie is turned around so you see the beginning of the movie at the end, which is the only originality of the movie.Not only you see the end at the beginning but it is filmed in such an awful way that your eyes cannot follow the movement and in the night-bar for homosexuals you cannot distinguish what is happening.Above all Marcus is on drugs and the movie pours out such a violent atmosphere that you think your are in a nightmare.If this is one of the hells of Dante's Inferno, than it is well described.The movie is only interesting as a charge against drugs, prostitution and rape.The theme of the movie that time destroys everything is not the correct one, I would suggest that crime destroys everything.As an illustration of the horror of such crimes this movie has a merit: is an indication that real life can be more horrific than the most frightening horror-movie.