There are 224 pages in this book. This book was published by HarperCollins .

Terry Pratchett's previous children's titles include Truckers, Diggers, Wings, Only You Can Save Mankind, Johnny and the Dead (which was successfully televised) and Johny and the Bomb, which won a Smarties Prize Silver Medal and was shortlisted for the Guardian Children's Fiction Award. He lives in Wiltshire