Tony Hill (Robson Green) finds himself a fish out of water when he's invited to Texas as an expert witness in a case of family annihilation. Known drug addict and Iraq combat vet Darius Wade has confessed to brutally slaughtering his wife and two young children. His defence team claim that Darius' traumatic experiences in war have left him with post-traumatic stress syndrome, and he committed his crime while hallucinating - a mitigating factor that should spare him the death penalty. The prosecution want Tony to join with them in proving that Darius' supposed PTSD is a fraud, especially in light of a rape crime he committed while stationed in the UK - a crime for which Tony interviewed him but for which he escaped justice because the US Air Force whisked him home. Alone in a strange country, surrounded by hostile lawyers and police, Tony finds himself at the centre of a maelstrom of competing legal and political interests. He's insulted, threatened, framed and physically attacked... and meanwhile his doubts grow about the case. Nobody is quite what they seem. And everyone has a vested interest in Darius. Everyone, that is, except Darius himself, who seems peculiarly determined to die.