Explorers on Witch Mountain : The Polar Bear Explorers' Club, Book 2 (The Polar Bear Explorers' Club)
2018
The Polar Bear Explorers' Club (The Polar Bear Explorers' Club)
2018
Explorers on Black Ice Bridge (The Polar Bear Explorers' Club)
2019
The Ocean Squid Explorers' Club : The Polar Bear Explorers' Club, Book 4 (The Polar Bear Explorers' Club)
2021
Insel der Hexen: Der Polarbären-Entdeckerclub 2
2019
Reise ins Eisland: Der Polarbären-Entdeckerclub 1
2018