Barbara Pellizzari

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.

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?

While attending the Festival of Time in Germany, the Thea sisters investigate the theft of a famous clock.

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 mysteries and still get the paper out on time.

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.

Join Thea Stilton and the Thea Sisters on an adventure packed with mystery and friendship! The Thea Sisters visit Mexico!

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.

When Will Mystery calls, the Thea Sisters answer the call because there is trouble in one of the fairy kingdoms: a dragon has been turning all the fairies' precious gems into stone, and wrecking havoc throughout the Crystal Kingdom--and it is up to the sisters to find out why the dragon is destroying this Kingdom and stop him before it is too late.

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 the secret of the fairies.

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.