When Thea Stilton travels to Ireland to search for a missing agent, she finds that the whole fantasy Land of Erin is being threatened by earthquakes, and soon Will Mystery and the Thea sisters follow to help her find the secret of the fairies.

Headed for the Grand Canyon to investigate a mystery at a hotel, Basil finds himself involved in dangerous adventures as he tries to foil the schemes of a ruthless smuggler.

Ricky Ricotta, a small mouse, is being bullied at school, but when he rescues a powerful robot from its evil creator, he acquires a friend and protector--and saves the city from Dr. Stinky.

Alexander, a real mouse, wants to be a toy mouse like his friend Willy until he discovers Willy is to be thrown away.

When you're with Geronimo Stilton, it's always a fabumouse adventure! Geronimo is celebrating his birthday! He is out with his family when he realizes someone has replaced all of his money with counterfeit bills. Geronimo and Hercule set out to find the thieves!

A Bear has settled in Mouse's favorite chair--and that chair just isn't big enough for two. He tries all kinds of tactics to move the pesky Bear but nothing works and poor Mouse gives up. Once Mouse has gone, Bear gets up and walks home. But what's that? Is that a Mouse in Bear's house?

When Babymouse decides to become president of the student council, she learns that there is more to running for office than being famous and in charge.

The mouse who lives in Sherlock Holmes' cellar heads to the lost island of Kataarh to unravel the mystery of a race of miniature cats and their mouse king.

Poppy, a deer mouse, urges her family to move next to a field of corn big enough to feed them all forever, but Mr. Ocax, a terrifying owl, has other ideas.