Thea Stilton and the Dragon's Code (Geronimo Stilton: Thea Series #1)

Geronimo's adventurous sister Thea takes center stage in this super special that's packed with mystery, adventure, and friendship!

When Geronimo's sister, Thea, is invited to teach a journalism class at a college on Mouse Island, she has no idea that she's going to be called on to help solve a mystery. But when a student disappears, it's up to Thea and five of her students to find out what happened. A nail-biting mystery ensues, complete with secret passages, underground tunnels, and more th...