Creepella opens Mouse Island's first dating agency and hires Geronimo as her assistant, but someone is trying to sabotage their business.

"I, Geronimo Stilton, was off to the wildest part of Brazil - the Amazon jungle! I ended up on a hunt for a rare crystal treasure, which was stolen from a native tribe in the heart of the forest. I'd encounter alligators, snakes, piranhas, and other dangers on my way. Holey cheese! What an adventure!" -- Back cover.

Geronimo and his friends discover a huge oyster with an enormous pearl inside. After a feature article in the Rodent's Gazette, can they protect it from being stolen?

When his nephew invites him to Career Day at school, Geronimo causes havoc. How's he going to get himself out of this mess?

If you give a mouse a brownie, he's going to ask for some ice cream to go with it. When you give him the ice cream, he'll probably ask you for a spoon. He'll start drumming on the table. Drumming will get him so excited he ll want to start a band...

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

"Rancid rat hairs, the cat pirates are coming to town! They're planning on stealing New Mouse City's Statue of Liberty and taking it back to Cat Island. They think it's completely made of gold! My friends and I are determined to protect our city's precious symbol. But can we stop these fearsome felines?"--Page [4] of cover.

When Space mouse Geronimo Stiltonix helps an alien spacecraft get back to its home planet, their queen becomes enchanted by Geronimo, and tries to force him to marry her and stay on the planet Flurkon forever.

While Geronimo's out with his family celebrating his birthday, he realizes someone's replaced all of his money with counterfeit bills. He and Hercule set out to find the thief.

Thea Stilton and her journalism class try to find a missing student.