WARNING: Major spoilers for episode two ahead.

Moving forward to May 1990, a year and five months since the bombing, and Guthrie calls Jim to report a new inquiry into a separate incident, as Lockerbie continues to be ignored.

Jim is busy, seemingly making what appears to be a bomb in the back of a radio, before packing it into a suitcase.

Arriving at Heathrow, there’s now security spot checks on luggage. Security looks through Jim’s luggage, even picking up the radio, but only asks him if he’s taken the battery out before letting him through.

At the Swire house, daughter Cathy comes to visit Jane, and sees a new painting of Flora on the wall - a gift from her boyfriend’s father. She comments there’s reminders everywhere, including dozens of photographs. Jane admits she’s not in a great place, still having nightmares about the plane crash and imagining Jim’s plane crashing.

Jim arrives at Boston with no issue, picks up his suitcase and exits. He meets with American survivors and reveals the “bomb”, though it was actually made of marzipan, and comments that all security checks failed.

The group alerts the news about his stunt, and soon his family back home are hounded. Cecil Parkinson vows to speak to Swire on his return to the UK, and when he lands back at Heathrow he is met by police. While he’s initially arrested, he’s given a verbal warning but later released. Jane is furious, who scolds him for keeping her in the dark and therefore unprepared for the fallout. She’s worried his obsession with the truth is consuming him.

For a much-needed break, the family head to Isle of Skye for some time away. They race along the beach, and later watch old home movies from their time there with Flora, before visiting her grave. That night, at the pub, a news report reveals two suspects have been identified - Libyan nationals - and the family are relieved, saying they ‘got them’.

In Libya, Abdulbaset al-Megrahi returns home, looking in a state of shock. Wife greets him, but they’re disturbed when she sees the news report with his face on it.

Once home, Jim starts taking down his now covered wall of news clippings and reports, replacing them with the two suspects and a map.

At the supporters' group, Jim presents a slideshow of evidence explaining how the suspects, Megrahi and Al Amin Khalifa Fhimah, were found. As Libyan Intelligence Agents with connections to airports, it’s believed the bomb was put on board in Malta, with Fhimah’s old security pass to allow unaccompanied security tags to go on the plane and therefore the bomb onto the flight. The explanation and evidence seems watertight.

But Guthrie later calls Jim, who hasn’t bought it, and says he’s heard the Prime Minister had been requested by the President of the US to ‘leave off’ Iran, believing it’s a large conspiracy in order for the government to target Libya. Jim tries to brush it off. Guthrie warns that the country’s ruler, Colonel Gaddafi, would have a response.

One evening, a man called Nabil turns up at Jim Swire’s house to warn that Gaddafi would never release the two suspects despite Libya being under pressure. He notes Gaddafi thumbs his nose at the west, and will stall this at every turn. While he says the men may stand trial in Libya, Jim argues it’s imperative they be trialled in Scotland. Nabil agrees, and proposes he take Jim to meet with Gaddafi. Jim is hesitant, but Nabil says Gaddafi approaches things unconventionally, knows who he is, will not comply with government demands, and will harden if the UN steps in.

Jim speaks to his family, who are dead set against him going, especially his son knowing Gaddafi’s reputation as a ruthless dictator and what he’s done before. Guthrie is also hesitant, but admits he would take the chance as he has nothing to lose – unlike Jim. Guthrie warns him not to mention this to anyone, as the government will be watching his every move and has likely been listening in. He thinks they would try and stop him.

Jim and Nabil go to Libya, to meet with Gaddafi. There’s a statue of a golden fist holding a US plane in its grasp as he approaches the compound, and a memorial for Gaddafi's adopted daughter, who died aged 15 months in a terror attack.

When Gaddafi arrives, he’s flanked by a dozen officers with machine guns. Gaddafi argues that the west has already condemned the two men, and Swire admits that’s not justice. He shares with him pictures of Flora, and says he wants a fair trial. Gaddafi remains steadfast, saying Libya will not comply. He appeals father to father, saying it’s not about revenge and that the truth should be known. Jim puts a badge on Gaddafi, saying he just wants to know who killed his daughter, and the ruler leaves.

News reports about the meeting circulate, and Jim’s heavily criticised for ‘giving Gaddafi publicity’. He receives hate mail calling him a traitor and even support group members speak against him.

In Libya, Megrahi agrees under Gaddafi’s instruction to do an interview with US’s ABC News. He is hesitant, but does so, appearing nervous throughout as he’s grilled about the indictment against him. Megrahi claims he was home in Tripoli at the time he is accused of flying to Malta to plant the bomb. When they leave, his wife tells him off for lying about where he was. They argue, and he tells her not to ask questions.

Jim receives a call from Nabil, who informs him the UN has gone ahead with the sanctions, and Gaddafi refuses to give the two men up. News reports fast forward through the next seven years, showing demonstrations in Libya, and an international political stand-off as the UN continues their attempts to extradite Megrahi and Fhimah. During that time, Tony Blair becomes the new Prime Minister.

Professor Robert Black QC meets with Jim Swire at Edinburgh University to share with him the proposal the trial be held in The Netherlands: a neutral country with Scottish judges to argue for a more fair trial. However, Gaddafi wants to be seen as standing up to the West, while the UK and US don’t want to be seen to be bending to him. Jim offers to help, and suggests visiting Gaddafi once again.

The men meet at a camp in the desert, Gaddafi says he’s becoming impatient, and Robert notes that the world wants this trial to happen. He appeals to Gaddafi’s ego, saying no one is expecting him to take the lead, and that agreeing would lift the sanctions on his country, and maintain his reputation.

The Libyan government finally agrees to the trial in the Netherlands, under Scottish law, in a landmark moment in legal history. Megrahi is taken by Gaddafi’s men to the Valkenburg Airbase in the Netherlands.

Jane makes Jim promise that, after the trial, he puts the fight to bed and accepts the verdict no matter what it may be.

Yes. The real Jim Swire successfully travelled from London’s Heathrow Airport to New York’s JFK, and then from there to Boston, with a fake bomb in his bag on May 18, 1990.

His aim was to prove airline security had not improved – and he was successful, having passed through three major airports without any kind of detection.

Jim modelled his “bomb” to be almost exactly that of the Pan-Am 103 Flight, including building it in a cassette player, a pressure-gauge timer, and a dummy detonator. The only difference was he used marzipan instead of the explosive Semtex, which also has an almond smell like the cake ingredient.

Security were warned by West German intelligence to be on the lookout for this type of device in luggage weeks before Lockerbie. But despite searching his bag, Jim was allowed through without issue.

Rather than the immediate reaction that we saw in the episode, it took six weeks for the gambit to become public knowledge.

Swire later said that it “made him sad at the idea Pan-Am could happen again”, and said in a press conference (as reported by LA Times): “You simply cannot imagine how depressing it was flying over the Atlantic knowing that there could easily be a bomb in the cargo hold below.”

“This was not a prank,” he added. “It was a serious experiment, and unfortunately it succeeded. Here, 18 months after Lockerbie, one can take an identical device through security. I find that very depressing.”

He added that maintaining Lockerbie in the news cycle until something was done was important to him, explaining: “Everybody is different in how they cope with their grief. Keeping a high profile, as I have, is my way of coping with my grief. And that will not go away.”