Fever Crumb
Philip Reeve
FEVER CRUMB is the stunning prequel to Philip Reeve’s brilliant science
fantasy quartet. It is set many generations before the events
of Mortal Engines, in whose dazzling world huge, predatory cities
chase and devour each other. Now, London is a riot-torn, ruinous
town, clinging to a devastated landscape and hiding an explosive
secret. Is Fever, adopted daughter of Dr Crumb, the strange
key that will unlock its dangerous mysteries?
Reviews

I like the link to the future and how it's all about the engineers and stuff.
Commander Itchy Sparrow 14.07.2020

This book is the prequel to mortal engines and it is really good
Anonymous 16.08.2015