In a faraway corner of a ruined world, a mysterious boy is buildinga flying machine. Birds help him, and so does a beautiful, brilliant,half-human engineer called Fever Crumb. But powerful enemiesstalk them - either to possess their revolutionary invention,or to destroy the secrets of flight forever.

The fabulous sixth book in the Mortal Engines series, from the brilliant and award-winning Philip Reeve.

Two years ago, Fever Crumb escaped the war-torn city of London in a travelling theatre.

Now she arrives in the extraordinary crater city of Mayda, where buildings ascend the cliffs on funicular rails, and a mysterious recluse is building a machine that can fly. Fever is the engineer he needs - but ruthless enemies will kill to possess their secrets.

Mortal Engines is now a major motion picture from Peter Jackson's studio,WingNut Films and stars Hera Hilmar, Robert Sheehan & Hugo Weaving.