adventurers, Tom Natsworthy and Hester Shaw, living in a lawless post-apocalyptic world inhabited by moving cities. For the fourth volume, Reeve won the once-in-a-lifetime 2006 Guardian Children's Fiction Prize, judged by a panel of British children's writers. Reeve spent more than ten years on Mortal Engines, coming up with ideas in 1989 or 1990, leading to publication in 2001. He was working on it part-time between illustration jobs, but as he became sure he could complete such a project, he cut down his illustration work and devoted more time to writing. The 2007 novel Here Lies Arthur is an alternative version of the Arthurian legend. Reeve and Arthur won the annual Carnegie Medal from the British librarians, recognizing the year's best children's book published in the UK. The Larklight trilogy (2006–2008) is steampunk set in outer space. The first book Larklight was being developed as a film by the Indian director Shekhar Kapur, but he is no longer involved. Reeve professes that when planning out a novel, "I see it as a film that I run in my head, and I just keep running alternative versions of it until I come up with a cut I like. The future of the film is now in the hands of the Swedish director Tomas Alfredson. Reeve began a series of Mortal Engines prequels with Fever Crumb (Scholastic UK, 2009). The first was one of eight finalists for the 2010 Carnegie Medal. In March 2020 Reeve said he did not intend to finish or publish a fourth book in the Fever Crumb series, as too much time had passed, thereby forgoing the world of Mortal Engines. In 2013, Reeve had his first co-authored, highly illustrated book with British-American writer-illustrator Sarah McIntyre published by Oxford University Press: Oliver and the Seawigs. This went on to win the UKLA Award. Their third book, Pugs of the Frozen North, won an Independent Bookshop Week children's book award. The pair have a contract with the same publisher for a series of four more books, beginning with The Legend of Kevin. In 2018, Reeve praised the 2018 Mortal Engines film adaptation, saying the director, Christian Rivers, had "done a fantastic job – a huge, visually awesome action movie with perfect pace and a genuine emotional core.... There are many changes to the characters, world, and story, but it's still fundamentally the same thing." In the Reevening in March