Thea Stilton and the riddle of the ruins text by Thea Stilton ; illustrations by Barbara Pellizzari, Chiara Balleello, Valeria Cairoli, and Valentina Grassini ; translated by Andrea Schaffer.
While the Thea sisters are at the excavation site of a dig at Hierapolis, Professor Brenninger unearths a series of priceless and very old figurines, but the Thea Sisters think the discovery may be a scam and investigate.
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