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 journeys to the wastelands of the North to seek out 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 superb writer Philip Reeve, at the height of his powers. The epic appeal of the Mortal Engines series crosses all age barriers Reeve's novels have won the Guardian Children's Award, Blue Peter Award, Smarties Gold Prize and the Carnegie Medal. Mortal Engines is now a feature film produced by Lord of the Rings director, Peter Jackson