Mortal Engines (Mortal Engines, Book 1)

Reeve creates a brilliant new world in this series soon to be a major motion picture. London is hunting again. Emerging from its hiding place in the hills, the great Traction City is chasing a terrified little town across the wastelands. Soon, London will feed. In the attack, Tom Natsworthy is flung from the speeding city with a murderous scar-faced girl.