Blood relations : a Torie O'Shea mystery, book 6. [large print]

Summary: When a drought hits the tiny river town and the depth of the mighty Mississippi lowers, Torie is one of the first on the scene to see what the water has revealed: the decades-old wreckage of a riverboat. Soon, the rumors that surrounded its sinking have resurfaced as well and are swirling all over town, most notably about the existence of a cache of diamonds thought to be on board that was never recovered. Before long, a trove of treasure seekers flocks to town, and inevitably, tragedy strikes amid the feverish competition of the treasure hunt. Meanwhile, Torie is staggered by another discovery---the existence of a half sister she never knew she had.