Season 8, Episode 4:
Lucas's past comes back to haunt him when his former torturer, Darshavin, turns up with intelligence about a bomb in London. Harry fears Darshavin still has a psychological hold over Lucas, but Darshavin will not deal with anyone else. With innocent lives at risk, Lucas must confront his demons for the sake of the nation. Can he overcome his Nemesis in order to save the day, or will the pressure be too much to bear?