Books available by Paul Stewart & Chris Riddell:

BARNABY GRIMES
Legion of the Dead
Return of the Emerald Skull
Curse of the Night Wolf

FAR-FLUNG ADVENTURES
Fergus Crane
Corby Flood
Hugo Pepper

THE EDGE CHRONICLES (in recommended reading order)
THE QUINT TRILOGY
The Curse of the Gloamglozer
The Winter Knights
Clash of the Sky Galleons

THE TWIG TRILOGY
Beyond The Deepwoods
Stormchaser
Midnight Over Sanctaphrax
The Complete Twig Trilogy

THE ROOK TRILOGY
The Last of the Sky Pirates
Vox
Freeglader
The Complete Rook Trilogy

BEYOND THE EDGE
The Lost Barkscrolls

THE FINAL EDGE
The Immortals

THE EDGE MAPS
The Edge Maps