While University of Michigan graduate student Jennifer Cassidy is researching the family history of Cecilia Sinclair, a long-deceased Southern expatriate, she discovers that something of great value is hidden in a spring near the family plantation in Florida. Jennifer contacts Beck Easton, a cave diver and former Marine, to help her. When Beck finds a map, it sets off a race for gold, and both pro- and anti-Cuban groups follow Jennifer and Beck as they travel from Florida to the Bahamas to Lake Huron, tracking clues that pre-date the Civil War. --from publisher description.