P: Who is the real terrorist in this room?

M: What're you saying?

In a claustrophobic concrete cell, two men face each other across a bare table. One is a wanted terrorist, the other a British intelligence officer. But this is no ordinary interrogation, and as they talk deep into the night and violent secrets are revealed, the line between interrogator and confessor begins inextricably to blur. Who, then, is the real terrorist? And will they pay for their guilt in blood?