移動都市
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".