During a handover to the head of counter-terrorism of MI5, Harry Pearce, a terrorist escapes custody. When Harry disappears soon after, his protégé is tasked with finding out what happened as an impending attack on London looms, and eventually uncovers a deadly conspiracy.
Keywords: conspiracy , corruption , disobeying-orders , escape , explosive , flashback , innocent-person-killed , kidnapping , massacre , mi5 , one-man-army , police , sabotage , terrorism