 A soldier of fortune under routine surveillance is found digging up a stash cold war weapons - but a high powered laser targeter for a missile system is already gone and in play. Adam and Danny are in charge of his interrogation, and what unfolds is a brilliant play-in-a-box where Adam uses techniques that were used on him in the Middle East, Danny questions whether these tactics make MI-5 too much like the people they chase, and the mercenary refuses to talk... until Adam uses leverage that most of the team finds over the line. The purpose of the attack is also unclear, and Fiona works on a corporate executive whose company may be paying the mercenary.