In the fifth season of the British espionage thriller，Harry Pearce and Adam Carter begin to suspect that members of the British establishment are creating a crisis IN order to bring about a change of government. In the opening episodes Juliet Shaw encounters a car bomb，and her life is changed forever. Plus we meet former MI-5，turned MI-6 officer Ros Myers（Hermione Norris），who discovers a shocking family connection to the season's game-changing conspiracy.