Excellent performance by Michael Sheen, but that's about it for the 2 stars.
I've always highly rated Samuel L Jackson, but it is not appropriate to portray torture as cool. Yes, it will be said that this was a morality tale and that the torture scenes were necessary for the plot, but in my opinion it was graphic, gratuitous and virging on the pornographic.
It is very rare that I wish I had not seen a film, but this was one of them.
I notice that many reviews criticise the inconclusive ending of this film. Speaking for myself, I was just glad when it did end.
Best to avoid this film as I wish l had.