It had been a wild week for the Smith boys. The Sycamore Detective Agency uncovered the secrets of a long-rumored lost treasure, but in the process, they also discovered their great-great-grandparents aren't buried where everyone thought they were. And their empty tomb holds even more secrets. Headquartered in the historic and mysterious farmhouse known as Barton Manor, nine-year-old Johnny Smith and his younger brothers Matt and Cooper secretly fight...