In a future land once known as Britain, nomad tribes are preparing to fight a terrifying enemy - the first-ever mobile city. Before London can launch itself, young engineer Fever Crumb must journey to the wastelands of the North. She seeks the ancient birthplace of the Scriven mutants. In the chaotic weeks before battle begins, Fever finds a mysterious black pyramid. The extraordinary secrets it contains will change her world forever. The seventh awe-inspiring adventure in the "World of Mortal Engines" series by a superb writer at the height of his powers.
- ISBN13 9781407115214
- Publish Date 7 April 2011
- Publish Status Out of Print
- Out of Print 9 November 2013
- Publish Country GB
- Publisher Scholastic
- Imprint Marion Lloyd Books
- Format Hardcover
- Pages 400
- Language English