context: The serial opens with Prime Minister Francis Urquhart shooting his gun dog, now too old to perform its duties â a scene which establishes the theme of the ending of a career. Shortly afterwards, Urquhart attends the fictional state funeral of Margaret Thatcher. He publicly praises Thatcher as his mentor, but privately begrudges her record as the longest-serving prime minister in recent history,[note 1] a record that Urquhart himself is soon to surpass.
  To "leave my mark on the world," Urquhart champions a treaty resolving the Cyprus dispute while secretly working to bring offshore oil deposits under the control of the Turkish authorities on the island so that a Turkish-British consortium will have the drilling rights; an executive of the consortium has promised to provide for Urquhart's retirement fund in return. Urquhart also has a personal connection to Cyprus: as a nineteen-year-old British Army lieutenant serving there in 1956, he killed two young EOKA guerrillas while trying to get information from them. Urquhart has frequent nightmares and flashbacks of this event, and also of the murders of Mattie Storin and others, shown in the previous series.
  On a motorway near London, Urquhart's car is rammed by another car containing three drunken louts. The attackers are quickly killed by his security staff. Urquhart sustains minor head injuries in the collision, but his life is not endangered. When Elizabeth arrives at hospital, he is delirious and confuses the incident on the motorway with the incident in Cyprus. Tom Makepeace, Urquhart's Foreign Secretary and Deputy Prime Minister, chairs a cabinet meeting while Urquhart is in hospital; Urquhart considers Makepeace â the actual negotiator of the Cyprus treaty â as a potential challenger, although he doesn't take the threat very seriously, considering him "not a fighter" but "a sentimental dreamer".
  The brother of the murdered Greek Cypriot guerrillas, who witnessed their deaths, lives in London and recognises Urquhart as the soldier who killed them. He asks his daughter Maria to investigate while secretly considering taking vengeance on Urquhart. Maria's search of government records finds a report on the incident written by Urquhart, but his name is redacted. Upon being approached by Maria, Urquhart arranges for documents revealing his involvement to be excluded from a coincidental declassification of British records relating to Cyprus. But he also confides the truth to Elizabeth. Meanwhile, Urquhart appoints ambitious backbencher Claire Carlsen as his Parliamentary Private Secretary. Claire also happens to be Makepeace's lover. When Urquhart asks her advice about Makepeace, however, she tells Urquhart to "get rid of him."
  Encouraged by Claire, Urquhart enrages Makepeace by making a speech in the House of Commons suggesting that Britain should not adopt the European currency, but that Europe should instead adopt English as its official language. When Urquhart seeks to appoint Makepeace to the Department of Education in a cabinet reshuffle, Makepeace resigns from the government, crosses the floor, and emerges as the prime minister's main adversary in parliament. He also challenges Urquhart for the leadership of the Conservative Party and forces him into a second ballot. Although Claire ends her sexual relationship with Makepeace, she continues to talk to him privately and encourages him to fight Urquhart. She also advises Maria to take her case to Makepeace, who repeatedly raises the cover-up in parliament. At Makepeace's suggestion, Claire purloins the unedited report on the Cyprus killings from the secret government archive where it is stored. However, Urquhart's bodyguard, Corder â informed by the archive clerk â seizes the document from her.
  Makepeace's leadership challenge has attracted enough support to convince Urquhart that his position is in jeopardy. He decides to leak information regarding the oil deposits in order to stir up a conflict in Cyprus as "our Falklands" to unite Britain under his leadership. When Greek nationalists kidnap a British diplomat and the Greek Cypriot President, Urquhart deploys British troops to retrieve them. Though the troops successfully rescue the hostages, the intervention later results in the death of civilians, including young schoolgirls, largely because of the prime minister's drastic orders. Urquhart's support plummets, and when he proves unwilling to accept responsibility for the deaths or express sympathy for the victims, many MPs openly call on him to resign. While Urquhart appears defiant, his wife is worried, and she consults Corder for advice on how to save him. Corder advises "drastic measures", and informs her that he has sent a copy of Mattie Storin's tape, revealing Urquhart's role in her death, to Makepeace.
  Makepeace confronts the prime minister and announces that he will publish the tape, but not before Urquhart has achieved his aim of surpassing Margaret Thatcher's record. After this, Urquhart again meets Maria. The incriminating Cyprus report has been sent to Maria's father anonymously - presumably by Corder - and Maria vows to publish it. After this, Urquhart despairs, but Elizabeth consoles him: "We can be safe still!" and hints at a ploy by Corder. At the unveiling of the Margaret Thatcher memorial, on the day when Urquhart surpasses her record, a sniper in Corder's services appears on a rooftop and shoots the prime minister (and Maria's father, who had approached Urquhart with a pistol). Elizabeth had arranged for his assassination as the only way to preserve his reputation (and the retirement fund). Urquhart dies in her arms, while Corder offers his services to Makepeace, the apparent successor.
question: How did Alan's friend die?
answer: There is no Alan