The tenth and final season of long-running British espionage thriller "MI-5" sees Harry return to his post as head of Section D, wherein his Russian opposite Ilya Gavrik (Jonathan Hyde) proposes a strategic partnership between their countries. New "spooks" Erin Watts (Lara Pulver) and Calum Reed (Geoffrey Streatfield) join the fight to prevent all enemies of the alliance from sabotaging the plan and instigating a war.
Season seven of British spy thriller "MI-5" opens with Adam Carter (Rupert Penry-Jones) valiantly battling to move a car bomb away from a densely packed memorial service. Meanwhile Harry secures the release of Lucas North (Richard Armitage), a MI-5 officer imprisoned in Russia for eight years. It's not long, however, before Ros begins to suspect Lucas' loyalties. The rest of the season deals with a top secret Cold War-era operation named Sugarhorse.
In season six of the British espionage thriller, the team are pushed to their limits, as the relationship between British and American security deteriorates and loyalties change. Adam and Ros fight against an emerging terrorist threat, and a deadly virus that could decimate London. This season breaks away from the case-by-case episodic format, with one dominant storyline tying all the action together.
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.
The British espionage drama "MI-5", provides more shocking twists and turns in its third season. Tom Quinn (Matthew Macfayden) disappears following a shooting and new man Adam Carter (Rupert Penry-Jones) rises to the challenge in Section B. After recovering from his injury, Harry (Peter Firth) tasks Adam with proving Tom's innocence. Later in the season Danny (David Oyelowo) and Zoe (Keeley Hawes) are sent on a mission that has tragic consequences for one of them.