The state of the entire nation hangs in the balance after Frank checks into a nightmare treatment centre which KORPS' has infiltrated in order to steal secrets directly from the brains of MI9 agents. With the threat of nuclear destruction looming, the team are faced with their most difficult dilemma yet - to save Frank's life or to rescue Britain from catastrophe. Will they choose the greater good over the well being of their beloved spy handler? (thetvdb.com)