SKU:9780545835503 (2015) Join Geronimo Stilton and explore prehistoric times in this fun spin-off series! Sally Rockmousen, host of Old Mouse City’s Gossip Radio show and Geronimo Stiltonoot’s rival, challenges Geronimo to a hunt for news. They’re competing for journalism’s most coveted prize in prehistory! Just as Sally is on the verge of victory, Geronimo uncovers a shocking scoop. But is he in time to win?