The Thea Sisters are five students at Mouseford Academy on Whale Island. They are adventurous, lively, fun mice and they want to become journalists someday. Between lessons and friendship, life at Mouseford Academy is incredibly fabumouse! Anna Winnouse, the fabumouse editor-in-chief of Cosmouse magazine, is renting Cheddarton House, a cottage that overlooks Whale Island's Seashell Beach. She's trying to get away from the media for a while, but it...

The Thea Sisters are off to save the rainforest in Malaysia! "The Thea Sisters are heading to Malaysia. Their freinds, Latifah and Ramlee are writing a travel guide and have asked the sisters to help them research. They are stopping at all the best sites, eating all the best foods, and seeing the most amazing animals, especially in the rainforest. While exploring, they learn about a plan to cut down the trees in the forest, and Ramlee and their guide...

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?

There is a crisis in the Starlight Kingdom, one of the fantasy worlds: its stars, powered by a special kind of stardust, are fading and may soon go out forever, leaving the Kingdom in darkness--so the Thea sisters and Will Mystery set out for Brightstar Castle to discover what is wrong, but first they must overcome the obstacles and challenges that the fairies are placing in their way.

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.

When the Thea Sisters compete in a battle of the bands, in hopes of meeting their favorite band Top Direction, they must find their sound, write a song, and identify the saboteur who is trying to ruin their performance.

"An adventure down under! Moldy mozzarella! A flock of sheep at Nicky's family's Australian ranch was losing all its wool, and no one knew why. Nicky and her friends the Thea Sisters headed to Australia and set off on a tour of the whole country in search of clues. What happened next turned out to be a truly memorable outback adventure!"--Pages [4] of cover.

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

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 Thea Sisters are headed to Venice, Italy! They'll be there for the Carnival, an annual festival that's famouse for its elaborate masks. The mouselets love exploring the city's bridges and canals, and seeing the beautiful costumes mice wear to Carnival celebrations. But a mysterious thief strikes while they are there! Can they unmask him before the festival ends?"--Page 4 of cover.