Two months after trading Albany, a state secret, for Ruth Evershed, Sir Harry Pearce is on garden leave until a tribunal can determine his future with MI5, however Home Secretary William Towers arranges for Harry to return on a provisional basis until its conclusion. Harry learns that Towers has smuggled his Russian opposite, Ilya Gavrik, into the country to propose a strategic partnership between Russia and the United Kingdom without the knowledge of the United States government. It has also em
A laptop containing the identities of five high level assets is stolen when Calum Reed is attacked. Several attempts to find the thieves are unsuccessful as they are highly resourceful. The identity of the first asset is later leaked to the Internet and he is found apparently murdered by his Iranian targets. Furthermore another one of the assets is Martha Ford, who is working for one of Gavrik's companies. When her name is leaked next, Erin rescues her and brings her to a safe house. However und
Section D learns that known anarchist Johnny Grier is in London, and is believed to be making a dirty bomb after trace amounts of radioactive material was detected at Heathrow Airport. To get close to Grier, Dimitri Levendis is assigned to honeytrap his sister, Natalie, via Internet dating. Section D follows him to a cell, who plans to attack the Velanon Group, a financial company who made millions from a nuclear disaster. When Dimitri confronts him, Grier reveals he thought he was smuggling her
Imprisoned Islamic extremist leader Zubier Al-Saad appoints two recently released inmates to commit a suicide attack. One of the released is Ashur Mohali, an asset from the prison who passed intelligence to Section D; he agrees to help stop the attack on the condition that his daughter be given British citizenship. However his handlers already kidnapped her to ensure the attack succeeds, and Ashur is now committed to the cause for his daughter's safety. Section D later learns that the attack wil
Harry, Erin and Dimitri kidnap Coaver. However, during the interrogation, he insists he is not attempting to derail the talks between Gavrik and the British. A CIA team later arrives to recover Coaver, but after they depart another CIA team arrives; realising the first team were imposters, the MI5 agents give chase. The imposters throw a beaten Coaver from their vehicle, and a dying Coaver tells Harry that his laptop contains the answers he seeks. Harry later meets with Elena, confiding that he
After Elena claims she has information about an upcoming attack that she will only disclose to Harry, the Section D team breaks him out of CIA custody and hides at an abandoned Ministry of Defence site. Elena reveals she was involved in the subterfuge against the UK/Russia partnership talks, and is planning an attack meant to push Britain and Russia into war, with the help of Russian politicians who view the partnership as embarrassing to them. Furthermore she reveals Sasha is not Harry's son. T