- Thea Stilton and the Dragon's Code
- The phantom of the orchestra, Thea Stilton
- Stilton, Thea, Mouseford academy, 8
- The Journey to Atlantis
- Thea Stilton, the treasure seekers, text by Thea Stilton ; translated by Julia Heim ; illustrations by Giuseppe Facciotto, Chiara Balleello, Barbara Pellizzari, Valeria Brambilla
- The dance of the star fairies, Thea Stilton ; illustrations by Giuseppe Facciotto, Chiara Balleello, Barbara Pellizzari, Valeria Brambilla, and Alessandro Muscillo ; translated by Julia Heim
- The Thea sisters and the mystery at sea!, by Thea Stilton ; art by Ryan Jampole
- Stilton, Thea, Mouseford Academy, 11
- The Land of Flowers
- A fashionable mystery, Thea Stilton ; illustrations by Valeria Brambilla and Francesco Castelli ; translated by Anna Pizzelli
- Thea Stilton and the Hollywood Hoax
- The friendship recipe, Thea Stilton ; illustrations by Barbara Pellizzari (pencils) and Francesco Castelli (color) ; translated by Anna Pizzelli
- Sea turtle rescue, Thea Stilton ; illustrations by Barbara Pellizzari (pencils) and Francesco Castelli (color) ; translated by Andrea Schaffer
- Stilton, Thea, Thea Stilton, 27
- Drama at Mouseford, Thea Stilton ; illustrations by Giuseppe Facciotto (pencils) and Davide Turotti (color) ; translated by Julia Heim
- Thea Stilton and the great tulip heist, [text by Thea Stilton ; illustrations by Barbara Pellizzari (drawings) and Daniele Verzini (color) ; translated by Emily Clement]
- The Legend of the Maze
- The Magic of the Mirror