Thea Stilton and the Riddle of the Ruins is an adventure novel from the popular Thea Stilton series, a spin-off of Geronimo Stilton. The story follows the five adventurous young mice known as the Thea Sisters—Colette, Nicky, Pamela, Paulina, and Violet—as they travel the world to solve mysteries. This installment involves a quest to a historical, often exotic, location centered around ancient ruins. The mission involves deciphering an intricate riddle related to the ruins to uncover a lost treasure or a historical secret. The book blends mystery, travel, and strong female friendships.
