Most Popular Books by Thea Stilton

When the Thea Sisters find a secret diary, they have to track down the mysterious student who wrote it, in this page-turning graphic chapter book.

Mouseford Academy is planning a spring field trip to the waterfall in the forest, but angry bears are chasing people! Something strange is going on - could Vissia de Vissen be up to her nefarious tricks again? If Colette, Nicky, Pamela, Paulina, and

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 phanto

Join the Thea Sisters at Mouseford Academy! The Thea Sisters and some friends decide to start a school newspaper. But when Colette's diary goes missing and sports reporter Nicky witnesses a suspicious finish during the Iron Mouse Games, the five mice have to put their reporting skills to work solving mysteries! Can the Thea Sisters come up with the answers and make their deadline for the paper too?

The Most Famouse band on the Mouse Island, the Ratstreet Boys, is performing at Mouseford Academy! The band's producer, Mark Mousington, is auditioning student bands as the opening act. Can the Thea Sisters win the spot as the opening band?

It's election time at Mouseford Academy and the candidates from the Lizard and Gecko student clubs face some challenges if they want to get elected president.

Is it sabotage? 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? Nicky is always in a good mood when she s outdoors. Colette is energetic and full of great ideas. Pamela is a peacemaker who can t stand arguments. Paulina loves traveling and helping other rodents. Violet is detail-oriented and always open to new things. "

Join Thea Stilton and the Thea Sisters on an adventure through Mouseford Academy! The students of Mouseford Academy are participating in an enormouse science fair! Mice from schools around the world are all hoping to take the top prize. The Thea Sisters would love to win, but so would Ruby Flashyfur - and shes willing to do whatever it takes! Can these mice play nice, or will the science fair be a total flop?

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

A high-action adventure starring the Thea sisters, five aspiring journalists who find the start of their new year at Ratford College overshadowed by a savage killer who is threatening the peace during the annual whale migration.

Ärger im Big Apple! Die Thea Sisters fliegen nach New York, um Nicky beim Big-Apple-Marathon anzufeuern. Doch dann droht ein geheimnisvoller Unbekannter damit, die Pizzeria von Pamelas Familie niederzubrennen! Können die Thea Sisters herausfinden, wer hinter diesen Drohungen steckt?

Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are off to save the rainforest in Malaysia.

The Thea Sisters are five students at Mouseford Academy on Whale Island. They are adventurous, lively, fun mice and they want to become journalists someday. Between lessons and friendship, life at Mouseford Academy is incredibly fabumouse! Anna Winnouse, the fabumouse editor-in-chief of Cosmouse magazine, is renting Cheddarton House, a cottage that overlooks Whale Island's Seashell Beach. She's trying to get away from the media for a while, but it hasn't been easy. Can the Thea Sisters help Anna Winmouse keep her visit to Whale Island a secret?

"While exploring a remote part of Whale Island for a class project, the Thea Sisters stumble on a group of researchers studying migrating butterflies. Eager to learn more about the beautiful creatures, the mice volunteer as assistants. But when a TV crew shows up unexpectedly, there's drama in the camp! the butterflies may be in danger, and it's up to the Thea Sisters to protect them. It's a colorful adventure they'll never forget!"--back cover.

The Thea Sisters are thrilled about the new performing arts program being offered at Mouseford Academy. That is, until they meet the head of the department--the demanding and strict Professor Ratyshnikov. The mouselets will have to audition just to get into her class! On top of that, the famouse ballerina is an old friend of Headmaster de Mousus, but the two no longer get along. It's up to the Thea Sisters to find out why. -- Back cover.

For the first time ever, Mouseford Academy is offering a course in outdoor survival skills, and it's being taught by the athletic adventurous Bruce Hyena! All five Thea Sisters sign up, along with the Ruby Crew. But when a terrible storm hits during the two-day outdoor challenge, there are mouselets in danger! Who will come to the rescue? -- Back cover.

The students of Mouseford Academy are participating in an enormouse science fair! Mice from schools around the world are all hoping to take the top prize. The Thea Sisters would love to win, but so would Ruby Flashyfur - and she's willing to do whatever it takes! Can these mice play nice, or will the science fair be a total flop?

"The famous Chef Crouton is teaching a course at Mouseford Academy on healthy eating and the Thea Sisters are chosen to compete on a special episode of his TV show! What do you get when you mix five friends, a cooking contest, a visiting brother, a few misunderstandings, and a pinch of drama? The perfect friendship recipe, of course!" -- Back cover.

The underwater kingdom of Aquamarina is in trouble because the enchanted Music of the Sea has stopped playing--so Thea and the Thea Sisters, together with their friend Will Mystery set out on a dangerous mission to find the Sea Violin which will restore color and life to the Kingdom.

Mouseford Academy is celebrating their 600th anniversary and the headmaster and teachers decide to put on a play of the famous Mouseo and Juliet. The Thea Sisters want the role of Juliet but so does their rival, Ruby Flashyfur.

"When two new students - Bradley and Irving - arrive at Mouseford Academy, they become friends with the Thea Sisters instantly. The crew begins to plan Whale Island's first ever theater festival and costume ball! But Bradley is keeping a secret from his new friends. What will happen when they find out who he really is?" -- Back cover.

There's going to be a musical at Mouseford, and the students can't stop squeaking about it! Everyone wants a role, but the auditions won't be easy. Plus, sneaky Ruby Flashyfur has some tricks up her sleeve! Will the Thea Sisters come out on top ... or will they be singing a different tune when the auditions are over? -- Back cover

A professor at Mouseford Academy is organizing a trip to outer space, and the Thea Sisters are invited. The mouselings are headed on a fabumouse mission... to the moon! After much preparation, the mice blast off. But when they arrive at their lunar vacation spot, things start to go wrong, including spaceship wrecks and rebellious robots! Can the Thea Sisters save the day? Find out in an adventure that's out of this world!

Thea Stilton is taking the reading world by storm! In this exciting adventure, Thea's friends 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 wealthy Japanese collector. Will the five mice be able to track down the doll and catch the thief? Readers will love following the clues to help the Thea Sisters solve the mystery.

"The Thea Sisters travel to New York to cheer for Nicky as she runs the Big Apple Marathon. While there, they visit Pamela's family and have a delicious dinner at the family's pizzeria. But when someone threatens to burn the restaurant down, can the Thea Sisters catch the troublemaker and solve the mystery?"--P. [4] of cover.