The Famous Five and the Valley of Dinosaurs

While dreading an impending party, the Famous Five find themselves stranded in a quaint town after Aunt Fanny's car breaks down. To fill the time, they explore the local natural history museum, where exciting new dinosaur bones are being revealed. There, they meet Marty, who shares a tale about his late father's discovery of a complete dinosaur skeleton and a stolen treasure map leading to it. Intrigued by the mystery, George, Julian, Dick, Anne, and Timmy embark on a guided hike through the Valley of Dinosaurs, suspecting that one among them may be the thief.