When a haunted dinosaur wreaks havoc across Mysterious Valley, Creepella tries to tackle the beast and brings Geronimo along for help.

In each Geronimo Stilton book, another funny, cheesy adventure is always right around the corner. Each book is fast-paced, with lively full-color art and a unique format kids 7-10 will love.When my friend Petunia Pretty Paws gave me a crystal figurine of a boat as a gift, I had to accept it. After all, I have the biggest crush on Petunia! But oh, was that crystal boat ugly! So I wasn't too sad when my cousin Trap accidentally broke it, especially...

With the fair in town, Creepella looks forward to enjoying herself, but when rollercoaster riders begin to disappear, Creepella investigates the mystery.

Geronimo Stilton's ancestor, Geronimo Stiltonoot, must prove his innocence when the grand prize from the Cavemouse Idol competition is stolen.

Traveling to Cleanix to investigate why floating space junk has engulfed MouseStar 1, Geronimo finds that the planet's alien inhabitants are extremely wasteful and face the threat of rebellion by the robots they've thrown in the trash.

When their cousin is stung by a cavefly and falls into a deep sleep, Geronimo and Thea set out in search of the rare pink stinkrose, whose petals are thought to provide a cure.

When his cousin is captured by the king of the dragons, Geronimo must deliver the Crown of the Seven Rubies to free him.

Geronimo Stilton visits Australia where he has an adventurous time dodging sharks and snakes, and getting lost in the Outback.

When Geronimo is invited to Creepella von Cacklefur's spooky castle, he is surrounded by the gloom of the castle as well as by Creepella's creepy family!

When a ski trip lands Geronimo Stilton in the hospital, he was sure it was going to be the worst Christmas ever. But his family and friends had something else in mind.