In the days following Hurricane Florence, three boys walk along the beaches of North Carolina's Barrier Islands. Amidst the wreckage, they stumble upon a wooden box washed up on the shore. And inside that box they find the dismembered remains of a teenage girl. "I saw her teeth," says one of the boys. "I know she's real--I saw her teeth." The grisly scene harkens to a spate of disappearances and unsolved murders from decades past. But...