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 discovery of an old map at a flea market by his sister Thea leads Geronimo and his family to search for buried treasure on a faraway island.

Geronimo and his friends set sail to the Ratlapagos Islands to search for a sunken treasure. He soon begins to suspect that they aren't the only ones looking for the treasure.

Geronimo Stilton finds himself in the wild West, where he gets into a showdown with an evil rat.

I was so excited about Christmas, I could squeak! My favorite nephew Benjamin was going to come over, and we were planning to trim the tree and eat lots of delicious holiday Cheesy Chews. But before you could say "cat alert," disaster struck! I slipped over my tail and ended up in the hospital. And then my mouse hole caught on fire! Holey cheese, this was turning out to be the worst Christmas ever....

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?

It's Halloween on Mouse Island, and it seemed like everyone was out to get me, Geronimo Stilton! My cousin Trap kept pulling scary pranks on me. And then my sister Thea told me I had to write a book about Halloween in less than one day! Before you could say boo, my nephew Benjamin had dragged me to a graveyard to do research. There I met a very spooky mouse who -- yikes! -- tried to lock me up in her coffin! Oh, how would a 'fraidy mouse like me ever...

Geronimo tries to enjoy his seaside vacation even though his hotel is dilapidated.

"My cousin Trap was entering the Super Chef Contest, which determines the best cook on Mouse Island--and he was bringing me along as an assistant. Slimy Swiss cheese, I don't know the first thing about cooking fancy dishes--and I didn't think Trap did, either"--Page 4 of cover.

When Geronimo gets a call to help Hercule Poirat solve a mystery at the same time as his date with Petunia Pretty Paws, what is a gentlemouse to do?