According to legend, a very rare diamond called Jasmines 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 their adventures are over, the Thea Sisters receive an invitation to travel to China to find another missing treasure.
Its an adventure these five world-traveling mice will never forget!
Author-Geronimo Stilton
Category-Fiction
Series-Geronimo Stilton
Age Group-Primary And Middle School
Publisher-Scholastic Inc
Binding-Paperback.