"9-year-old Levi King knew he should have left for home sooner; now he's alone in the darkness of vast Caddo Lake, in a boat whose motor just died. A sudden noise distracts him - and all goes dark. Darren Mathews is trying to emerge from another kind of darkness; after the events of his previous investigation, his marriage is in a precarious state of re-building, and his career and reputation lie in the hands of his mother, who's never exactly had...