Thea Stilton and the Ghost of the Shipwreck (Geronimo Stilton: Thea Series #3))

Geronimo's adventurous sister, Thea, narrates this fabulous adventure that's packed with action, mystery, and friendship!During a marine biology lesson at Mouseford Academy, the Thea Sisters learn about a mysterious shipwreck off Whale Island. According to legend, a very rare diamond called Jasmine's Heart was on the ship when it sank. When biology teacher Professor Van Kraken disappears, the Thea Sisters have to dive into the deep ocean to find him and the jewel. And just when they think ...