A Web of Air

The Fever Crumb series is the title of a series of novels written by Philip Reeve, and is the prequel series to his Mortal Engines Quartet. 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.