Phantom of the orchestra —Stilton, Thea, author.

After Violet is chosen to play in the orchestra for a London production of "Romeo and Juliet," Thea and her friends investigate acts of sabotage before the culprit can ruin the show.

Thea Stilton and the riddle of the ruins —Stilton, Thea, author.

While the Thea sisters are at the excavation site of a dig at Hierapolis, Professor Brenninger unearths a series of priceless and very old figurines, but the Thea Sisters think the discovery may be a scam and investigate...

The missing diary —Stilton, Thea, author.

The Thea Sisters and some friends want to start a school newspaper. Then Colette's diary is missing and sports reporter Nicky, witnesses something suspicious at the Iron Mouse Games. The Sisters' try to solve both myster...

Mouselets in danger —Stilton, Thea, author.

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...

Mice take the stage —Stilton, Thea, author.

The Ratstreet Boys, the most famous band on Mouse Island, is performing at Mouseford Academy and their producer is auditioning student bands as the opening act--can the Thea Sisters win the coveted spot?

Thea Stilton and the Niagara splash —Stilton, Thea, author.

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, o...

Thea Stilton and the Venice masquerade —Stilton, Thea, author.

The Thea Sisters are in Venice, Italy, for the Carnival, an annual festival that's famouse for its elaborate masks. But a mysterious thief strikes while they are there. Can the mouselets catch and unmask him before the f...

Thea Stilton and the Hollywood hoax —Stilton, Thea, author.

While visiting a movie set in Hollywood, the Thea sisters set out in search of a thief who has stolen an important reel of film from the studio.

Thea Stilton and the tropical treasure —Stilton, Thea, author.

While on vacation in the Bahamas, the Thea sisters stumble across an old pirate map and endeavor to find the treasure, unaware that someone else is also seeking the prize.

Thea Stilton and the frozen fiasco —Stilton, Thea, author.

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...

Thea Stilton and the lost letters —Stilton, Thea, author.

It is up to the Thea sisters to investigate when their friend is falsely accused of theft and barred from competing in a figure skating championship in Russia.

The treasure of the sea —Stilton, Geronimo, author.

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 ...

Thea Stilton and the Madagascar madness —Stilton, Thea, author.

Attending an adventure camp in Madagascar, the Thea Sisters enjoy learning about the region's exotic plant and animal species before discovering that someone has been stealing endangered animals from the jungle.

Thea Stilton. The journey to Atlantis —Stilton, Thea, author.

When Paulina, one of the Thea Sisters, finds a strange blue-skinned boy unconscious on the beach, the sisters set out to solve the mystery of who the boy is and where he comes from -- and how to return him to his home.

The secret of the fairies —Stilton, Thea, author.

When Thea Stilton travels to Ireland to search for a missing agent, she finds that the whole fantasy Land of Erin is being threatened by earthquakes, and soon Will Mystery and the Thea sisters follow to help her find th...

Thea Stilton and the missing myth —Stilton, Thea, author.

While vacationing in Greece, the Thea sisters are asked to help find an actor who has gone missing right before the opening of his play.

The secret invention —Stilton, Thea, author.

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 a...

Thea Stilton and the great tulip heist —Stilton, Thea, author.

While Violet is taking an art class in Holland, her friends' father turns up missing. His disappearance is linked to a mysterious black tulip.

Mice on the runway —Stilton, Thea, author.

Thea Stilton and the Black Forest burglary —Stilton, Thea, author.

"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 mouselets are on the case. Can they find the thief and return the clock...