Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are in Russia for a figure skating championship! When their new friend is falsely accused of theft and barred from competing for the gold medal, the five mice resolve to clear her name. Along the way, they discover ancient love letters that could be the key to finding the real culprit! But can they solve the mystery in time?

The Thea Sisters are on a magical adventure! The Thea Sisters' next adventure to the Kingdom of the Fairies!

Geronimo's adventurous sister Thea narrates this tale packed with action, mystery, and friendship!In this fabumouse adventure, the Thea Sisters head to Alaska, where they're attending a conference held by an important ecological association. Their host and his family are native Alaskans who show the mouselings their favorite games and activities. But soon there's trouble--the Thea Sisters discover that someone is upsetting the ecosystem by blowing up the ice with explosives! Can the Thea Sisters figure out what's going on and stop the destruction before it's too late?

Join Thea Stilton and the Thea Sisters on this adventure packed with mystery and friendship! The Thea Sisters are visiting friends at a lively festival in Spain. But the theft of a precious fan turns their trip into an investigation! They end up hot on the trail of a secret treasure . . . but they're not the only ones searching for it. Can the mouselets solve the mystery in time? It's a mission full of flamenco dance!

The Thea Sisters are headed to Venice, Italy! They'll be there for the Carnival, an annual festival that's famouse for its elaborate masks. They mouselets love exploring the city's bridges and canals, and seeing the beautiful costumes mice wear to Carnival celebrations. But a mysterious thief strikes while they are there! Can they catch and unmask him before the festival ends?

The Thea Sisters are on a magical adventure! The Thea Sisters' next adventure to the Kingdom of the Fairies!

A magical world is in danger! The Thea Sisters are on their way. . . . Thea Stilton and the Thea Sisters are on an expedition to the fantastical Land of Erin. While they are searching for a missing friend, they learn that the land itself is in peril! The mouselets are ready to help.On their journey, they encounter fairies, pixies, and other magical creatures -- some helpful, but some out to trick them! Can the Thea Sisters save the Land of Erin before it's too late? It's an adventure full of mystery and friendship!