A Web of Air (Paperback) - Philip Reeve

In a faraway corner of a ruined world, a mysterious boy is building a flying machine. Birds help him, and so does a beautiful, brilliant, half-human engineer called Fever Crumb. But powerful enemies stalk 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.