E. A House

"Chris and Carrie Kingsolver have the location of the lost treasure ship San Telmo. (Well, Carrie almost has it.) With their friend Professor Griffin and two slightly sketchy grad students, they're off to find it. Meanwhile, Maddison's dad has dragged her off to Nebraska, to consult with a retired police detective about the disappearance of an old college friend. And back at home, the FBI is going door to door. Who else wants the ship so badly? And...