1.Thea Stilton and the Prince's Emerald:
When the Thea Sisters' friend Ashvin is in trouble, they rush to his aid . . . in India! Ashvin has been bringing the monkeys that live in the big city back to their natural jungle environment. But the monkeys have suddenly started stealing jewels! Someone must be behind this terrible theft. Can the Thea Sisters solve the mystery?

2.Thea Stilton and the Ghost of the Shipwreck:
What is Jasmine's Heart?There's a haunted shipwreck off Whale Island and a rare diamond was lost when the ship sank. When the Thea Sisters' biology professor disappears, the
mice have to dive deep into the ocean to find him - and hopefully recover the priceless jewel! And just when they think their adventures are over, the five mice are invited to China to search for another lost treasure!Meet the Thea Sisters!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 travelling and helping other rodents.Violet is detail-oriented and always open to new things.

3.Thea Stilton and the Missing Myth:
Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!

While on vacation in Greece, the Thea Sisters make friends with a company of actors. They are rehearsing for a show that's about to open -- and Colette ends up standing in for an actress who falls ill! Suddenly, right before the performance, the lead actor goes missing. Can the mouselets find him in time for the show to go on?

4.Thea Stilton and the Big Trouble in the Big Apple:
The Thea Sisters are off to New York City for another fabumouse adventure! Nicky has been training to run the Big Apple Marathon, and her friends are there to support her. While in the city, they all visit Pamela's family and have a delicious dinner at the family's pizzeria. But the mouselings discover that someone has been threatening to burn the restaurant down, and Pam's family might have to close it for good to stay safe! Will the Thea Sisters catch the troublemaker before it's too late?

5.Thea Stilton and the Madagascar Madness:
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?

6.Thea Stilton and the Dragon's Code:
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!

7.Thea Stilton and the Secret of the Old Castle:
When the Thea Sisters' friend Bridget returns to Scotland for a family emergency, the five mice offer to help. And when Bridget goes missing, they have to rush to Scotland to help find her! Along the way, the Thea Sisters encounter Celtic legends, cryptic messages, and hidden treasures on a trip that's full of surprises!