My first published novel, Mortal Engines is an adventure set in a far-off future where cities rumble about on wheels and merchant airships ply the skies. Three sequels continue the story - Predator's Gold, Infernal Devices and A Darkling Plain. Later I returned to the same world but in an earlier era for a prequel series - Fever Crumb, A Web of Air and Scrivener's Moon. (I'd recommend reading them in the order they were written, starting with the four Mortal Engines books, and moving on to Fever Crumb.) The Illustrated World of Mortal Engines is a lavishly illustrated encyclopaedia & history of the Traction Era, and Night Flights contains three short stories with wonderful illustrations by Ian McQue, who also created the cover art for the series.