series. Sean Cook and Anthony Neilson are also writers of the series. Alrick Riley, Julian Holmes and Bharat Nalluri are the series directors, with Nalluri directing the last two episodes. Chris Fry is the series producer, and Jane Featherstone, Simon Crawford Collins and Howard Burch are the executive producers. Development Early on in the series's developmental stage, it was decided that it would only consist of six episodes, likely because of budget cuts at the BBC. The series featured a mix of standalone stories, and a "big old arc" that runs through it. The arc focuses on Harry, the only remaining original lead character from the first series. The Harry/Ruth storyline continued, as Firth believed it is "too delicious to stop". The series also saw the pair's relationship enter a new phase, though it may probably be "too late for them to proceed any further". Brackley and Vincent realise that there are fans of the show who will be "immensely cheesed off if they get anything less than Ruth riding in on a unicorn to marry Harry in a white suit", but at the same time know other fans "love the uncompromising toughness of Spooks. And both viewpoints were always well represented around the table". The storyline also features Harry and the Section D team forging new relationships with different countries, including Russia, which in the series has a better image in the Middle East. Because of this, the writers storyline a deteriorating "Special Relationship" between Britain and the United States. For the finale episode, the writers went through "countless" ideas for how it would end. Some of the dropped ideas lasted for weeks, one of them being Harry detonating a nuclear weapon in Siberia. Other characters had their own stories as well. Dimitri was the "chief action man", with his very own centric episode, where he was to honeytrap a young woman in the third episode. Though Myles left the series, there were plans to explore her character's past further should Myles remain on board. On the other hand, it allowed the writers to introduce Erin Watts and Calum Reed. Real world events were often written into Spooks episodes, though they do not alter their main plots. Episodes of the tenth series made references to such world events in 2011 such as the 2011 Libyan civil war, and the death of Osama bin Laden. Filming took place from March,