Book excerpt: It was a dark, blustery afternoon in spring, and the city of London was chasing a small mining town across the dried-out bed of the old North Sea. So begins Philip Reeve's Mortal Engines, the first book in his epic post-apocalyptic series of giant motorized cities on wheels. But how did the world end up like this? What led to the downfall of our civilization, and to the rise of the Traction Cities that roam the Great Hunting Ground to attack and devour each other? Now, for the first time, discover the untold future history of Traction. This lavishly illustrated book contains incredible tales of fearsome Zagwan warriors riding war-zebras into battle, daring air-traders flying the Bird-Roads in search of adventure, and the mysterious plague-ridden wasteland of the Dead Continent that was formerly known as 'North America'. This definitive companion guide includes detailed maps, fascinating character profiles, and stunning colour illustrations from incredible artists, including Ian McQue, David Wyatt, Aedel Fakhrie, Maxime Plasse, Rob Turpin, Philip Varbano and Amir Zand. MORTAL ENGINES is soon to be a major motion picture.