Geronimo Stilton. Thea Stilton

Thea Stilton and her journalism class try to find a missing student.

While five little mice at Mouseford Academy are looking for their missing biology professor they dive to a haunted shipwreck off Whale Island to find a rare diamond that was lost when the ship sank.

Geronimo's adventurous sister Thea narrates this fabulous adventure that's packed with action, mystery, and friendship!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. Readers will love following the clues to help the Thea Sisters solve the mystery! ...

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?

Geronimo's adventurous sister Thea narrates this tale packed with action, mystery, and friendship!In this fabumouse adventure, the Thea Sisters head to Alaska, where they're attending a conference held by an important ecological association. Their host and his family are native Alaskans who show the mouselings their favorite games and activities. But soon there's trouble--the Thea Sisters discover that someone is upsetting the ecosystem by blowing...

Geronimo's sister Thea Stilton narrates this action-packed adventure!The Thea Sisters have been invited to Egypt to participate in a fabu-mouse archeological excavation. They are helping to look for the legendary ancient Treasure of the Sun! A precious blue stone scarab may be the key to their search, and they work enthusiastically to uncover the past. But they also discover that thieves are after the hidden treasure. It's up to the Thea Sisters to...

"The Thea Sisters are boarding the famouse Orient Express for a journey from Paris to Istanbul! The train is on a special trip to return a precious wedding dress stolen years ago from an Istanbul museum. But there's a rumor that the mysterious Acrobat Thief will steal the gown from the moving train! The Thea Sisters are determined to foil this sneaky mouse's plans" -- p. [4] of cover.

Join Thea Stilton and the Thea Sisters in this adventure packed with mystery and friendship! The Thea Sisters are in Hawaii to compete in an international hula festival. The mouselets are having a great time -- until they learn that the festival is located on the side of a volcano that is about to erupt! No one else seems know about the danger. The Thea Sisters don't have any time to lose! Praise for Geronimo Stilton books:"Lightning pace...

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. Praise for Geronimo Stilton...

It is up to the Thea sisters to investigate when an Ecuadorian chocolate factory known for its environmental practices begins malfunctioning and the owner suspects sabotage.

The Thea Sisters are in Russia for a figure-skating championship! When their new friend is falsely accused of theft and barred from competing, the five mice resolve to clear her name. Along the way, they discover ancient love letters that could be the key to finding the real culprit! But can they solve the mystery in time?

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?

When one of the Thea Sisters' favorite mystery writers goes missing, the five mice travel to the author's native Iceland, where they reconstruct the dangerous plot of his latest novel in the icy terrain to piece together clues.

When a member of their group goes missing, the Thea sisters head to Niagara Falls to find him.

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?

The Thea Sisters help their friend Beatrice prepare for the Summer Olympics!

Taking a road trip to San Jose along Route 66 while stopping in Chicago, St. Louis, and other iconic cities, the Thea Sisters are dismayed to learn that an unknown saboteur has wiped a special video game project off of a programmer friend's computer.