14 books • 4 series
Jenseits des verborgenen Sees (Der Verborgene See)
Il lago segreto
Beyond the Secret Lake (Secret Lake Mystery Adventures, #3)
Rückkehr zum verborgenen See (Der Verborgene See, #2)
Return to the Secret Lake (Secret Lake, #2)
The Tell-Me Tree
The Christmas Tree Wish
Ferdinand Fox and the Hedgehog (Ferdinand Fox Adventures)
Walter Brown and the Magician's Hat
Henry Haynes and the Great Escape
Ferdinand Fox's Big Sleep Colouring Book
Ferdinand Fox's Big Sleep
Eeek! The Runaway Alien
The Secret Lake