This film, with only two characters, takes you closer to these two people, the interrogator and the prisoner, than most films take you to any character, however well-crafted.

The sheer confusion, terror and pain which Madeleine Stowe's character undergoes is deeply disturbing, as is Alan Rickman's sadistic yet charming interrogator.

This film is all too possible, and builds to a shocking climax, the effect of the film as a whole leaving you sitting in silence at the end. It'll haunt you for a long time.