内容简介：
Twelve-year-old Kelly still grieves for the loss of her grandparents. Seven months ago, her grandfather passed away, and her grandmother followed six months later. Kelly and her younger brother, Brandan, will both miss spending time at their grandparents' home in the Blue Ridge Mountains of Virginia. Now that they're here to pack up their grandparents' belongings, it just feels different. But when Kelly and Brandan stumble upon Grandpa's hidden laboratory, they realize that he was a man full of secrets. The siblings find a golden ring hidden deep inside the frame of their mother's childhood portrait, along with a strange note. With this new information, the siblings wonder if Grandpa died of natural causes-or something worse. Secrets from the Civil War, ghostly clues, and discoveries in an abandoned mansion combine to create a mystery that Kelly and Brandan must unravel if they are ever to solve the riddle of Grandpa's mysterious death. Full of adventure and spine-tingling thrills, "The Mystery of the Golden Rings" is a fast-paced, danger-filled ride