The Thea sisters continue the search for the seven ancient treasures, using the clues found in Aurora Beatrix Lane's travel diary to find a fabulous emerald which once belonged to Cleopatra--a quest that leads them from Moscow, to the Sahara, and finally Bolivia.

Ages 7-10. Scholastic Press.|||K to Grade 3. Scholastic Press.|||juvenile

Thea Stilton ; [translated by Andrea Schaffer ; illustrations by Giuseppe Facciotto, Chiara Balleello, Barbara Pellizzari, Valeria Brambilla, and Alessandro Muscillo].

Originally published under the title: Tesori perduti : la bussola di stelle; Segrate, Italy : Edizioni Piemme, ©2017.

"Based on an original idea by Elisabetta Dami."

In English, translated from the Italian.