When you're with Geronimo Stilton, it's always a fabumouse adventure! While on assignment in Chichén Itzà, Thea goes missing along with an ancient Mayan necklace. Geronimo is on the case to find them.

Geronimo Stilton is the pseudonym of the famous Italian writer Elisabetta Dami. She has written the famous series of books on Geronimo Stilton. She co-owns the Italian based publishing company called Edizioni Piemme. She likes to get all her ideas through her travels to places around the world.