in "The Sleeper" on the weapons scientist David Kelly, who committed suicide in July 2003 after he was outed as the source of BBC journalist Andrew Gilligan's story alleging the British government "sexed up" the September Dossier about weapons of mass destruction in Iraq. "Who Guards the Guards?" sees a rivalry between MI5 and MI6. According to the producers, there have been documented rivalries between the two organisations. The episode also referenced a true story of a man joining a militant group who was paid with a Russian army helicopter, as the group could not afford to pay him in cash. "A Prayer for My Daughter" deals with the Israeli–Palestinian conflict. Because the topic is controversial, it was a difficult area to work with without offending people from both sides. The producers made the episode as neutral as possible by consulting with experts from both sides of the conflict. Richards also wanted to fairly represent it by addressing the issue as political and not religious. The producers learned from an ex-MI5 officer that it is common for intelligence gatherers who spend most of their work listening in to other people to fall in love with civilians through just their voices. This story was the basis of Ruth wanting to go out with John in "Love and Death". Khoury based "Outsiders" on Internet security. He already knew the area, as he once worked for an internet company. Although the story is dramatised, Khoury did research on what was feasible, such as if one man and a laptop could theoretically bring Britain to its knees. "Frequently Asked Questions" deals with interrogation and torture. Walters realised that torture is counterproductive as the suspects can say anything the interrogators want to hear, but rationalises that Adam is an expert in that field. To get the interrogation as true to life as possible, the producers consulted with ex-Army advisors who were trained in questioning terror suspects. As the episode was first broadcast, a prison abuse scandal in Iraq was in the news. In response to this, Kudos director Stephen Garrett stated "Spooks is really well researched and sometimes we look like we're ahead of the game. It's just we know stuff that's happening, and it'll come out in the news a bit later on." In the same episode, the weapons caches came from a true story that the Russians hid weapons in Britain during the