After fifteen years at the CIL, Kel is fast approaching emotional meltdown. And that's when he encounters his thorniest case yet: the recovery of Jimmie Carl Trimble, a soldier from Arkansas who died a hero's death during the Vietnam War. When a rare DNA sequence turns up at both the Army and FBI labs, it points to the unthinkable: a link between Trimble and a forty-year-old unsolved racial killing in the Arkansas delta.