Geronimo investigates to see if the famous painting Mona Mousa holds a secret code.

An innkeeper's son finds a treasure map that leads him to a pirate's fortune.

"When Lucas decides to skip school because he wants to discuss football with a firefighter friend of his father, he finds himself caught up in the terrorist attacks on New York City."

In a troubled time for the Clans, three young cats, grandchildren of the legendary Firestar, begin their training as warriors and, in the course of many adventures, discover their true destiny.

"The wackiest road trip in history continues as the McDonald twins travel the Southwest dodging nefarious villains and visiting weird but true American landmarks"--

"Old Mouse City is in an uproar. The most precious artifact in the mouseum -- the Stone of Fire -- has been stolen! Geronimo Stiltonoot and his cavemouse friend Hercule Poirat are on the case. It's up to them to retrieve the stone from the ferocious Tiger Khan and his band of fearsome felines!"--Page [4] of cover.

Journeying to the ancient city of Babylon when Bhegad tracks down Marco, the companions face a daunting choice involving a dire trap and a long-lost figure from Jack's past.

After passing a series of mind-bending tests, four children are selected for a secret mission that requires them to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

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

Geronimo Stilton's ancestor, Geronimo Stiltonoot, investigates a witness's claim of a moving mountain of ice.