The world's most fa-mouse painting is hiding a big secret! An X-ray of the Mona Mousa reveals a strange riddle. Solving the clues takes Geronimo to the most dangerous parts of the city, but facing the hair-raising rollercoasters and vicious octopuses is all worth it for the amazing treasure at the end of the trail. Isn't it?

Geronimo, broken-hearted after a failed romance, sets out with his family to explore the Eighth Wonder of the Mouse World.

Lost in a dark, SPOOKY forest! It was something that could only happen to me, Geronimo Stilton. Until I STUMBLED on a spooky old castle. It was completely empty, or so I thought. But I quickly discovered that it was haunted--by CATS!

Geronimo ends up in a flea-ridden old hotel, sharing a room with Gerbil Scouts because all the good trips were booked.

Geronimo Stilton is a newspaper-writing, adventure-loving mouse who is taking the world by storm!

It all started when my sister, Thea, discovered a mysterious map. It showed a secret treasure on a faraway island. And before I could let out a squeak of protest, Thea dragged me into her treasure hunt! In no time at all, we'd set sail for the island. It was an adventure I'd never forget....

A Geronimo lookalike is going around pretending to be Geronimo and trying to take over The Rodent's Gazette.

It was Christmastime on Mouse Island, and I couldn't wait to celebrate with my friends and family. Until I learned that they were all traveling out of town for the holidays, and I'd be spending Christmas alone! I was depressed, down, despondent, and starting to feel like a real grinch! I wandered the streets of New Mouse City, feeling sorry for myself. But then I discovered an amazing surprised that taught me the true meaning of Christmas.

Presents three stories about the adventures of the mouse journalist in which he goes on a rescue mission to a land of vampire bats, is attacked by a ship of pirate cats, and takes a vacation only to find himself rooming with Gerbil Scouts.