An all-new hardcover adventure featuring Thea Stilton and the Thea Sisters!At the beach by Mouseford Academy, one of the Thea Sisters discovers a mysterious boy with blue skin washed up on the shore. He speaks an unfamiliar language, so the Thea Sisters call Thea Stilton to help figure out how to communicate with him. She sets the mouselings on an exciting journey across the world to hunt for clues about the boy's origins. Could he be prince of the underwater world of Atlantis? It's up to the Thea Sisters to get him home!

An all-new hardcover adventure featuring Thea Stilton and the Thea Sisters At the beach by Mouseford Academy, one of the Thea Sisters discovers a mysterious boy with blue skin washed up on the shore. He speaks an unfamiliar language, so the Thea Sisters call Thea Stilton to help figure out how to communicate with him. She sets the mouselings on an exciting journey across the world to hunt for clues about the boy's origins. Could he be prince of the underwater world of Atlantis? It's up to the Thea Sisters to get him home

Join Thea Stilton and the Thea Sisters on this adventure packed with mystery and friendship! The Thea Sisters are in Kenya on a photo safari! The mouselets love exploring the magnificent landscape and learning about the animals on the reserve they're visiting. A lion cub has just been born -- but while they're there, he's kidnapped! It's up to the Thea Sisters to rescue him in an adventure across the savanna.

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!

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

Join Thea Stilton and the Thea Sisters in their third magical special edition adventure! There's a mystery in the land of the lotus flowers!Thea Stilton and Thea Sisters are called to help to an enchanted land! It's a world linked to the legends of Japan, and it is in danger. The realm's special lotus flowers are disappearing, and no one knows why!The mouselets set off on a quest to solve this mystery. They must discover the secret of the lotus flowers -- but can they trust the strange magical creatures that they meet on their way? It's a fabumouse adventure!