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Thea Stilton — by Thea Stilton

Thea Stilton Series in Order: 39 books

  • Thea Stilton and the Dragon's Code

    Book - 1

    What is the Dragon's Code? I couldn't believe it when I, Thea Stilton, was invited to teach a journalism class at the prestigious Mouseford Academy! Once I arrived, I met five amazing students. And when another student disappeared, it was up to us t...

  • Thea Stilton and the Mountain of Fire

    Book - 2

    Geronimo's adventurous sister Thea narrates this fabulous adventure that's packed with action, mystery, and friendship!Thea's 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...

  • Thea Stilton and the Ghost of the Shipwreck

    Book - 3

    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 reco...

  • Thea Stilton and the Secret City

    Book - 4

    Where is the secret city? When Paulina gets a phone call from home telling her that a friend is missing, the Thea Sisters travel to Peru to help solve the mystery. There, the five mice climb the Andes Mountains in search of a missing archeologist. l...

  • Thea Stilton and the Mystery in Paris

    Book - 5

    It's a crime of true fashion! When Colette invites her friends to come home with her to Paris for spring break, the five mice are delighted. While they're in France, they'll even get to attend Colette's fashion-designer cousin Julie's runway show ...

  • Thea Stilton and the Cherry Blossom Adventure

    Book - 6

    In this exciting adventure, 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 mi...

  • Thea Stilton and the Star Castaways

    Book - 7

    An Adventure in Space! The Thea Sisters 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 rebell...

  • Thea Stilton: Big Trouble in the Big Apple

    Book - 8

    Geronimo's adventurous sister Thea narrates this fabulous adventure that's packed with action, mystery, and friendship! The Thea Sisters are off to New York City for another fabumouse adventure! Nicky has been training to run the Big Apple Maratho...

  • Thea Stilton and the Ice Treasure

    Book - 9

    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....



  • Thea Stilton and the Secret of the Old Castle

    Book - 10

    When the Thea Sisters' good friend Bridget has to return to Scotland to help her family repair their ancient castle, the five mice offer to help their friend in whatever way they can. Little do they know that Bridget will be kidnapped, and they'll ha...

  • Thea Stilton and the Blue Scarab Hunt

    Book - 11

    The Thea Sisters have been invited to Egypt to participate in a fabumouse 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 ent...

  • Thea Stilton and the Prince's Emerald

    Book - 12

    Geronimo's sister Thea Stilton narrates this tale packed with action, mystery, and friendship! 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 ...

  • Thea Stilton and the Mystery on the Orient Express

    Book - 13

    Geronimo's adventurous sister Thea narrates this fabulous adventure that's packed with action, mystery, and friendship! The Thea Sisters are boarding the famouse Orient Express for a journey from Paris to Istanbul! The train is on a special trip t...

  • Thea Stilton and the Dancing Shadows

    Book - 14

    A dishonest dance! The Thea Sisters are headed to Italy for a ballet competition! But the mouselets aren't just there to dance -- they are there to investigate. A group is plotting to rig the prestigious contest, and the future of the mouselets' n...

  • Thea Stilton and the Legend of the Fire Flowers

    Book - 15

    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 i...

  • Thea Stilton and the Spanish Dance Mission

    Book - 16

    Join Thea Stilton and the Thea Sisters on this adventure packed with mystery and friendship! The Thea Sisters are visiting friends at a lively festival in Spain. But the theft of a precious fan turns their trip into an investigation! They end up h...

  • Thea Stilton and the Journey to the Lion's Den

    Book - 17

    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...

  • Thea Stilton and the Great Tulip Heist

    Book - 18

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! While Violet is taking an art class in the Netherlands, her friend's father mysteriously disappears! The missing mouse is a renowned botanist -- and his dis...

  • Thea Stilton and the Chocolate Sabotage

    Book - 19

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are visiting a friend in Ecuador who has a sweet job -- he runs a chocolate factory! His factory is in the running for a major award for it...



  • Thea Stilton and the Missing Myth

    Book - 20

    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 who are rehearsing for a play that's about to open. When an actress spra...

  • Thea Stilton and the Lost Letters

    Book - 21

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are in Russia for a figure skating championship! When their new friend is falsely accused of theft and barred from competing for the gold m...

  • Thea Stilton and the Tropical Treasure

    Book - 22

    While the Thea Sisters are on a tropical vacation in the Bahamas, they stumble upon an old pirate map! It's related to a local legend. Could it lead to treasure?! The five mice venture onto the sparkling Caribbean Sea to follow the map... but someone...

  • Thea Stilton and the Hollywood Hoax

    Book - 23

    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 sto...

  • Thea Stilton and the Madagascar Madness

    Book - 24

    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 ...

  • Thea Stilton and the Frozen Fiasco

    Book - 25

    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...

  • Thea Stilton and the Venice Masquerade

    Book - 26

    The Thea Sisters are headed to Venice, Italy! They'll be there for the Carnival, an annual festival that's famouse for its elaborate masks. They mouselets love exploring the city's bridges and canals, and seeing the beautiful costumes mice wear to Ca...

  • Thea Stilton and the Niagara Splash

    Book - 27

    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 myst...

  • Thea Stilton and the Riddle of the Ruins

    Book - 28

    The Thea Sisters participate on a dig at Hierapolis. During their visit to the excavation site, Professor Brenninger unearths a series of priceless and very old figurines. But the Thea Sisters soon figure out that it's a scam. They start to investiga...

  • The Phantom of the Orchestra

    Book - 29

    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...



  • Black Forest Burglary

    Book - 30

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are invited to the Festival of Time in Germany! They arrive in the Black Forest and find that a famouse clock has been stolen. The mouselet...

  • Thea Stilton and The Race for the Gold

    Book - 31

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters help their friend Beatrice prepare for the Summer Olympics!...

  • The Rainforest Rescue

    Book - 32

    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 American Dream

    Book - 33

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters are taking a road trip across America along Route 66! They stop in Chicago, St. Louis, and other cities on the way to San Jose. Their frien...

  • A Roman Holiday

    Book - 34

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!The Thea Sisters spend the holidays in Rome!...

  • Fiesta in Mexico

    Book - 35

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!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 i...

  • Cave of Stars

    Book - 36

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!The Thea Sisters are going to New Zealand! Their new friend Charlotte wants to show them the sights, and introduce them to Didi, a skeleton of a bird that went ...

  • The Ghost of The Woods

    Book - 37

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!The Thea Sisters head to Ireland!...

  • The Search for the Secret Garden

    Book - 38

    Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship!The Thea Sisters go to Paris!...

  • The Thief of Blue Island

    Book - 39



Series Premise

The core premise follows Thea Stilton, a special correspondent for The Rodent's Gazette (edited by her brother Geronimo), who mentors and adventures alongside five international students known as the Thea Sisters: Colette, Nicky, Pamela, Paulina, and Violet. The group, bonded during their time at Mouseford Academy on Whale Island, travels the world solving mysteries, thwarting villains, and protecting people, animals, or treasures from harm. Each book delivers a standalone adventure: a missing student or artifact at the academy's start, escalating to global quests involving stolen jewels, endangered wildlife, ancient secrets, or eco-threats (e.g., rainforest destruction, endangered species poaching, or cultural heritage theft). The Thea Sisters use teamwork, individual strengths, and clues (often with Thea's guidance) to uncover culprits—typically greedy antagonists like thieves, smugglers, or corporate exploiters—while learning about cultures, history, and conservation. Thea occasionally joins directly, but the five friends drive most plots. Recurring themes include friendship across differences, environmental stewardship, courage in facing challenges, and the joy of discovery. Mysteries blend light suspense with educational content (facts about locations, animals, traditions), ending in triumph, lessons learned, and strengthened bonds. Spin-offs expand this: Mouseford Academy focuses on school life and competitions; Special Editions add fantasy elements like fairy realms or mythical journeys.



Thea Stilton Series Characters

The series centers on the Thea Sisters, five close friends from Mouseford Academy who embody distinct personalities and strengths:

- Colette: French, glamorous fashionista—stylish, romantic, detail-oriented; often handles social or aesthetic clues.
- Nicky: Australian, athletic outdoorswoman—energetic, nature-loving, eco-conscious; excels in physical challenges and wilderness adventures.
- Pamela: Brazilian (or sometimes depicted with Latin roots), cheerful foodie—warm, generous, strong; brings enthusiasm and practical help.
- Paulina: Mexican (or Latin American), tech-savvy intellectual—smart, gadget-loving, research expert; provides facts and digital solutions.
- Violet: Chinese, musical and refined—graceful, bookish, artistic; offers cultural insight and calm reasoning.

Thea Stilton is the mentor/narrator: Geronimo's bold, adventurous sister—a journalist who inspires the group, occasionally joins quests, and ties stories to the broader Stilton universe.

Supporting figures include Mouseford teachers/staff, occasional family cameos (Geronimo, Trap), and villains (greedy thieves, poachers). The ensemble's diversity celebrates international friendship and complementary talents.

Setting of the Thea Stilton Series

The series spans the globe, with adventures in diverse, vividly depicted real-world locations: exotic cities, natural wonders, historical sites, and cultural hotspots. Key recurring base is Mouseford Academy on Whale Island (a fictional idyllic island near Mouse Island/New Mouse City), a prestigious boarding school with castles, gardens, and mouse-sized charm.

Stories transport the Thea Sisters to places like China (dragon legends), Australia (outback ecology), Egypt (pyramids), India (Taj Mahal mysteries), Iceland (northern lights), Peru (Inca ruins), Japan (cherry blossoms), the Amazon rainforest, the Arctic, Hollywood, or Paris fashion weeks. Each setting is richly illustrated with landmarks, traditions, wildlife, and local customs—blending tourism appeal with educational insight. The mouse world mirrors human geography but with whimsical touches (mouse-sized landmarks, cheese-themed elements), creating a fantastical yet relatable backdrop for global exploration.

Tone & Themes of the Thea Stilton Series

The tone is upbeat, adventurous, and wholesome—energetic and optimistic with gentle mystery elements suitable for young readers. Stories emphasize excitement through travel, discoveries, and clever problem-solving rather than fear or danger; threats are cartoonish (villains thwarted comically), and resolutions are positive, affirming teamwork and kindness. Humor arises from character quirks (e.g., Colette's fashion obsession leading to funny moments, Pamela's hearty appetite), puns, and light-hearted mishaps. The narrative voice (often Thea's enthusiastic first-person style) is warm and encouraging, promoting empowerment, diversity, and curiosity without heavy moralizing. Illustrations—vibrant, detailed, with sidebars of facts, recipes, or mouse-slang—add playfulness, making the books feel interactive and fun. Overall, it's feel-good escapism that inspires wonder about the world while reinforcing positive messages.

The Thea Stilton series shines as a vibrant, globe-trotting extension of the Geronimo Stilton world, delivering 30+ adventures packed with mystery, friendship, and discovery for young readers. From the academy intrigue in *The Dragon's Code* to far-flung rescues in later titles like *Cave of Stars* or *Fiesta in Mexico*, the Thea Sisters' quests inspire curiosity about cultures, nature, and teamwork while keeping the tone fun, positive, and educational. With colorful illustrations, engaging plots, and empowering messages, it's a delightful series that encourages exploration—both on the page and in real life. For children who love travel, puzzles, and strong female friendships, Thea and her crew offer endless fabumouse journeys worth savoring.



Books in this series fall into the following genres

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Genres

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People / Creatures

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Frequently Asked Questions (FAQ)

There are 39 books in the Thea Stilton series.

The Thea Stilton series does not have a new book coming out soon. The latest book, The Thief of Blue Island (Book 39), was published in June 2026.

The first book in the Thea Stilton series, Thea Stilton and the Dragon's Code, was published in April 2009.

The Thea Stilton series primarily falls into the Action Adventure genre. This chapter book series was written for ages 7-10, but some older readers may still like to read these books.

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