内容简介：
What does a weird poem written by a dying uncle have in common with a 13-hour clock, a map with missing states, a book of island recipes, and a six-toed cat? These are just some of the clues that Emma, Maddie, and Michael must piece together in order to find and rescue Uncle Jack's greatest treasure before it is stolen by an enemy named Victor. The Game Begins with a vacation to the ancient forts of St. Augustine, but it soon leads them on a swamp tromp through the Everglades and then into the coral reefs of the Florida Keys. What they discover there will change their lives forever. They hold the keys to this mystery. They are the Key Keepers.