The Explorers' Club Books in Order

Stella Starflake Pearl joins an expedition across the frozen Icelands, eager to prove herself as an explorer. When she and three other children become separated from the adults, they must survive a wilderness crowded with magical dangers.

Expelled from the explorers' club, Stella refuses to abandon her friend Shay, whose wolf bite threatens to transform him. She and her companions embark on a forbidden expedition across Black Ice Bridge to find a lifesaving spellbook.

Submarine engineer Ursula dreams of becoming an explorer while hiding her mermaid heritage from a hostile club. When the Collector threatens its members, she leads her friends through dangerous waters on an expedition that could expose her secret.

Ursula and her friends sail toward Pirate Island to rescue children imprisoned by the Collector. With a magical trident and a pirate fairy's help, they must survive treacherous seas and find a way into an impregnable fort.

With Stella captured and the Collector imprisoning entire landscapes in snow globes, Ursula and her friends race to find their enemy. Their search takes them from a mysterious pirate ship into space, with the world's future at stake.