The Castle Conundrum

About “The Castle Conundrum”

Teen Village International sends Frank and Joe Hardy to the south of France to help rebuild a deserted town that will become a center for refugee children. However, they soon learn that the local castle is said to be haunted by the ghost of its long-dead lord, who is rumored to have hidden a fortune in diamonds within its walls. Strange occurrences, including spooky lights and strange noises, lead the Hardys to believe someone is trying to stop the project. Two French twins, descendants of the castle's original owner, want to protect the castle from developers. As the investigation unfolds, every clue leads to a dead end, and the Hardys find themselves facing a dangerous and determined opponent.