Their connection to the fantasy worlds is in danger... Join Thea Stilton and the Thea Sisters as they travel to help a new magical land! The mice encounter fairies and other strange and fantastical creatures as they work together to solve a mystery to save the realm from peril. It's a fabumouse adventure. Fairies, folklore, and magical creatures await Thea Stilton and the Thea Sisters in every Special Edition adventure!

When Geronimo's sister, Thea, is invited to teach a journalism class at a college on Mouse Island, she has no idea that she's going to be called on to help solve a mystery. But when a student disappears, it's up to Thea and five of her students to find out what happened. A nail-biting mystery ensues, complete with secret passages, underground tunnels, and more than a few surprises along the way. Readers will love following the clues to help Thea and her new friends through their first adventure together!

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!

The Thea Sisters spend the holidays in Rome!

The Thea Sisters are off to save the rain forest in Malaysia.

Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are taking a trip to Canada! They have been invited to do some bird-watching with a group of friends. The girls are enjoying learning more about Canada and their love for hockey. But during their trip, one of their group members mysteriously disappears. They set off to Niagara Falls to find him. Can they solve the mystery?

One of the Thea Sisters' favorite authors, a famouse mystery writer, has disappeared! To find him, the five mice travel to his native Iceland. Together they traverse the stunning landscape and reconstruct the plot of the author's latest novel. But it's more dangerous than they expected! Can the mouselets locate their beloved author, or will their search just end up as an icy mess?

The Thea Sisters are off to Madagascar for Adventure Camp, a wilderness survival competition! The five friends love exploring and learning about the many plants and animals that live there. But then they discover that they're not alone in the nature preserve - and endangered animals are under threat! Can the mouselets help before it's too late?

The Thea Sisters are visiting a friend in sunny California, and she invites them to the set of a movie in Hollywood! The mice love being around famouse and fabumouse directors and actors as they're working. But then an important reel of film is stolen from the studio! Can the Thea Sisters catch the thief and save the movie?

Paulina and the Thea Sisters journey to Peru to find their missing archaeologist friend, but as they ascend the Andes Mountains, the sisters find clues that lead them to a mysterious hidden city.

The Thea Sisters are going to Mexico City! They have been invited to be a part of a team researching monarch butterflies. Their friend Luz is an artist who is inspired by the butterflies and the culture of Mexico. When her mural goes missing just before her art show, the mouselets are on the case! Can they return the missing mural in time.

In this exciting adventure, the Thea Sisters are off to Paris to visit Colette's fashion-designer friend Julie. But when Julie's designs are suddenly stolen, the girls must search the city of Paris to catch the thief and save the fashion show.

The Thea Sisters are off to Japan on a cultural exchange program. While they're busy exploring Kyoto and admiring the beautiful cherry blossoms, a valuable doll is stolen from a Japanese collector. Can they recover the doll?

Thea and her friends the Thea Sisters take off for Australia to solve a mystery. A flock of sheep at Nicky?s family?s ranch is losing all its wool, and the ranch depends on the wool to stay afloat! Maybe the sheep?s cure lies in an Aboriginal medicine containing a strange root. The five mouselings set off on a tour of the whole country to find out. It?s a truly memorable outback adventure!

Violet has been chosen to play in the orchestra for a production of Romeo and Juliet in London! The mouselets begin to notice strange things happening during rehearsals. Someone is trying to sabotage the production. Can the Sisters uncover the phantom before the show is ruined?

During a marine biology lesson at Mouseford Academy, the Thea Sisters learn about a mysterious shipwreck off Whale Island. According to legend, a very rare diamond called Jasmine's Heart was on the ship when it sank. When biology teacher Professor Van Kraken disappears, the Thea Sisters have to dive into the deep ocean to find him and the jewel. And just when they think their adventures are over, the Thea Sisters receive an invitation to travel to China to find another missing treasure. It's an adventure these five world-traveling mice will never forget!