"Jed's lantern cast long shadows across the room. Tim gulped, not sure whether he wanted to stay there or not. It looked too much like a creepy dungeon!" The Wright Cousins are helping to restore a stone fort dating back to the American Revolutionary War. They expect hard work, but find more: secret passages, pirates, dangerous waterfalls, and clues to a hidden treasure of gold. There is also a new girl helping out who has a fondness for swordplay. Could she really be a princess in disguise? Join the Wright Cousins as they try to unravel their most puzzling mystery yet!