Where is airing: BBC Three
For what age: 14+
How many episodes in 9 season: 8 episodes
Section D is in mourning following the passing of Ros Myers who was huged in an explosion whilst attempting to save the life of the British Home Secretary. Harry is hit hardest by her passing and he's unhappy to find out that a trusted friend has blood on their hands. Harry wants revenge and is determined to get it. The following month, Lucas North gets on board a ship in Tangier as he follows Somalian Al Qaeda star, Abib. He is joined on board by Dimitri Levendes, who is pretending to be the ship's captain.
Beth Bailey finds herself being thrown straight into the thick of things with her first operation with Section D. She has to go undercover as an oil trader at a secret meeting of the country's top oil dealers. After being given intelligence that Robert Westhouse is the subject of an assassination attempt, Beth has to make sure that nothing happens to him. The oil traders are attacked in a machine gun massacre before the meeting takes part and only Beth and a man named Jacob Chapman survive. Section D attempt to uncover who is responsible. As Ruth delves deep into the case she finds out about a link between one of her colleagues and the masked gunmen.
After word gets out that the Azakstan Freedom Front is trying to get their hands on a lethal outlawed nerve agent, Lucas is sent by Harry to help the Russians destroy the sample. After one of the AFF make their way to London to try and get their hands on the substance, the team are forced to work swiftly if it is to prevent a biological weapon that could wipe out everything in London in hours if it is used.
A Chinese security services snatch team has come to London in pursuit of a scientist who has discovered a new desalinisation technique. Ruth goes under cover at a research facility to keep an eye on him, while Beth solicits the assistance of a Chinese double agent, but there are questions as to where his loyalties lie. Meanwhile, Section D has to evaluate a bomb threat. Lucas's relationship with Maya leads to an increasing detachment from the rest of the team.
The American President travels to London to chair a secret talk between peace negotiators from Palestine and Israel in an effort to sort out the differences between the two countries. Beth and Dimitri both go undercover as Home Office liaison officers at the talks, while the rest of team have to make sure that nothing jeopardises the event.
After British security is breached which results in a fatal American drone attack on a US army camp, the chief the CIA travels to The Grid. The relationship between the MI5 and the CIA are not good and Harry ends up agreeing that Section D and the rest of MI5 will use the USA's security system so that there will be no more breaches of security. Lucas has to protect ex-hacker Daniella Ortiz.
Keith Deery approaches Ruth and claims that he has uncovered covert activity. While following a woman for some minor offences, he witnesses a "dead drop" message left on a park bench. Ruth is not convinced by Keith's claims though. Ruth ends up discovering though that Deery has applied to MI5 four times but was rejected due to mental instability following his wife's passing. After talking to Dimitri, Ruth decides to trust her instincts and follow up the potential lead.
Section D have to face their toughest challenge so far when they are assigned to find one of their own. After Lucas North's shock revelations about his former life and double identity, Harry tells the team to find him no matter what the cost.
