Lost Treasure of the Emerald Eye. (Geronimo Stilton)

It all started when Geronimo's sister, Thea, discovered a mysterious map. It showed a secret treasure on a faraway island. In no time, his sister has dragged him and their cousin Trap into her treasure hunt.

• The Curse of the Cheese Pyramid (Geronimo Stilton #2)
• Cat and Mouse in a Haunted House (Geronimo Stilton, No. 3)
• The Karate Mouse (Geronimo Stilton, No. 40)
• The Underwater Planet (Geronimo Stilton Spacemice #6)
• Operation: Secret Recipe (Geronimo Stilton #66)
• I'm Too Fond of My Fur! (Geronimo Stilton #4)
• Attack of the Bandit Cats (Geronimo Stilton, No. 8)
• Geronimo Stilton Special Edition: Christmas Catastrophe
• The Chocolate Chase (Geronimo Stilton #67)
• Four Mice Deep in the Jungle (Geronimo Stilton, No. 5)