Geronimo Stilton

While five little mice at Mouseford Academy are looking for their missing biology professor they dive to a haunted shipwreck off Whale Island to find a rare diamond that was lost when the ship sank.

Geronimo Stilton gets caught up in the World Karate Championships, thanks to the efforts of Bruce Hyena and Piccolo Tao, Bruce's super-sporty cousin. Geronimo only has a week to become real champion material! Will Geronimo manage to overcome his fears in order to win the competition?.

Bruce Hyena convinces Geronimo to join him in climbing Mount Kilimanjaro, a task for which the mouse journalist is completely unprepared.

"New Mouse City journalists Samatha Tattletail and Simon Squealer are here to give you the scoop on Geronimo Stilton. They've discovered his biggest secrets through exclusive interviews with friends and family!" -- Back cover.

Geronimo Stilton's vacation plans are interrupted by the entire Stilton clan and a treasure hunt in the Black Hills of South Dakota, where he takes a hot-air balloon ride to Mount Rushmore.

Geronimo's idea for a vacation filled with sandy beaches and blue skies gets off to a bad start when he ends up in a fleabag hotel that's falling apart.

Geronimo is invited by his friend Creepella von Cacklefur to her family's spooky castle, and he is surrounded by the gloom of the castle as well as by Creepella's creepy family.

The Thea Sisters, in New York to watch Nicky run a marathon, conduct an investigation after Pamela's family receives a threat that someone is going to start their pizzeria on fire.

Mouse journalist Geronimo Stilton sets out on a quest to find the Ruby of Fire, a gem hidden in the depths of the Amazon jungle.