Section D receives intelligence that an Iranian agent, Mehan Asnik, is planning to attack London during a peace deal between Iran and the UK. The Home Secretary directs Harry to deal with Asnik before he arrives; Adam's team travel to Tehran to kill him using a bomb, so it will look like an internal struggle within the Iranian security forces. The bomb is detonated, but Asnik escapes unharmed and arrives at the British Embassy to defect. It is revealed that Asnik is working under instructions fr
Quarantine is imposed on St Edwin's Hospital where Mehan sought help and on members of the public. Adam is now infected and will continue working, but is instructed by Harry to go into quarantine before the end of the incubation period. After determining that either France, India, Russia, or the US has a vaccine for the virus, the team kidnaps a senior spy from each country, including CIA agent Bob Hogan. They bring them to the bunker of former MI5 officer Connie James and threaten them with the
Ros is abducted and tortured by Magritte, a French security officer, as part of a recruitment test for Yalta. Sholto, a Yalta representative, explains that the world-wide shadow organisation is named after the treaty that ended World War II and its aim is to stop the Americans from taking strategic actions that destabilise the world. Ros is given his clothing as evidence that Zaf is dead. Meanwhile, a cargo plane crashes near a US base. The Ministry of Defence has established a cordon around the
Algerian extremist Abdul Kahrami, breaks out of house arrest to launch a bomb attack. The target is unknown, but the Iranian Special Consul, Dariush Bakhshi is involved. Adam asks Bakhshi's wife, Ana, whom Adam had an affair with, to spy on her husband. While recording a conversation, Ana inadvertently kills a consulate guard to maintain her secret. Adam instructs her to stage an attempted rape as a cover. The recording of the meeting reveals only a simple business meeting and plan to have dinne
A Russian is selling the Iranians blueprints for missile firing triggers so they can gain nuclear capability. Adam kills a journalist who disguises himself as a mugger, and as a consequence, reporter Ben Kaplan publishes the story and Adam is on the run. Ros receives intelligence from Yalta about the Russian, and in exchange she agrees to bug the Grid. Ana gives Adam a tip, which helps the team learn when and where the delivery will take place. The Grid follows the Russian, and are able to switc
Acting on the information from Ana, the team learns that a courier with the firing trigger is boarding a flight to Tehran. Section D receives an email warning that if the courier does not arrive in Iran, a bomb will release a toxic chemical into the water supply. The email reinforces Harry's suspicions that there is a mole within the Grid and orders a sweep for bugs. Ros is conflicted about her participation in Yalta, when she learns that they arranged the sale of the trigger to Iran to limit Am
To prevent Iran from announcing that they are a nuclear power after acquiring the firing trigger, Harry and Hogan approach Bakhshi with a peace accord between their three countries. It is to be announced on a live BBC current affairs programme with Bakhshi, Hogan, and a senior UK cabinet member participating. Ben is asked to write a favourable story in exchange for being included in the audience. In turn, Ben asks Adam for help identifying a woman in a photo, who unbeknownst to them is Magritte.
After learning of Yalta during the hostage-taking in the previous episode, Hogan assassinates several members. Hostilities between Iran and America are escalating in the Gulf. Kaplan is watching Magritte and follows her to a meeting with Ros, who is asked to obtain codes to initiate an attack against the Americans. Realising that Kaplan has video of the meeting and that she has been exposed as a mole, Ros asks to be pulled, but Yalta insists that she carries out her assignment. In a last-ditch e
Disgusted by recent events, Adam gives Kaplan the story of MI5's involvement in the Tehran train bomb. Unbeknownst to Adam, his conversation was recorded by agents working for Bakhshi. Before Adam has a chance to hand over the proof, Section D is closed down pending an inquiry into Yalta's infiltration. Davie King, one of Harry's former assets from the IRA and now sworn enemy, has been sent to assassinate the team. King contacts Harry, and tells him that he has planted a bomb in London; the enti
The Israelis bomb the Gaza Strip and a girls' school is collateral damage. Bakhshi warns Harry of a revenge attack, as a parting gift: Al Qaeda has a British school under surveillance in advance of an attack. Zaf is found tortured to death in Pakistan. Adam learns from Hogan that Zaf was kidnapped from the Yalta operatives by a group called the Redbacks, mercenaries who capture spies, torture them for information while their clients listen, then sell them on. Harry learns that the visiting Venez
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Related entry on Wikidata (Q680722), public domain (CC0).