The time is the summer of 1958. The place is Dewmont, Texas, a town that the great American postwar boom has somehow passed by. A sad, hollow beat trails the kids who tune into rockabilly on the radio and waste their weekends at the Dairy Queen. And an undetected menace simmers under the heat that clings to the skin like thin molasses.

For blissfully ignorant thirteen-year-old Stanley Mitchell, the end of innocence comes with his discovery of an old trove of passionate yet troubled love letters that lead him to a long-ago house fire and the tragic deaths of two very different young women. Obsessed with investigating their fates, Stanley finds a guide and mentor in black, elderly Buster Lighthouse Smith, a retired Indian Reservation policeman who now runs the projector at the drive-in theater owned by Stanley's parents. The laconic Buster tutors Stanley on the finer points of Sherlock Holmes, the blues, and life's lost dreams.

But not every buried thing stays dead. And in one terrifying night of rushing creek water and thundering rain, an arcane, murderous force will suddenly rise from the past to threaten the boy - and test the limits of Buster's strength and wisdom. In the end the old man teaches Stanley a lesson that will haunt him always, about the forever short distance between living flesh and the dust from which it came.