"Letters in a mysterious journal between two sisters describe a lost collection and a missing treasure. As Sam, Derek, and Caitlin realize the letters were between Thomas Jefferson?s granddaughters, they set out to do what they do best?solve the mystery! When the journal is stolen, the kids are forced to hunt down clues by following Jefferson?s footsteps to The University of Virginia, his mountaintop home of Monticello, and a little-known retreat called Poplar Forest. But this isn?t a typical walk through history. Someone from the kids? past is lurking in the shadows, bent on revenge and threatening to take much more than just the treasure." from Amazon.