27 books
Cindy Lost and Allott's Claw
The Wordsearch Murders
Bodies in the Clearing
With No Warning
Cindy Lost and the Black Witch
Time to Die
The Eighteenth Panda
A Promise to Doreen
Almost Enough
Grandpa's Shed
Taldi'na
The Disappearance of Natalie Firth
Dexxman
Dauntless
Cardoney
The Diamond Sword of Tor
As a Consequence
Sudoku, Food for the Mind
The Yellow Dragon
Speaker
The Star Queen
The Lost Starship
The Adventures of Daisy Weal
Daisy Weal and the Last Crenian