Six months have passed since the first murder investigation Detective Reed Mattox and his K-9 partner worked together, finding them in the throes of a steamy Midwestern summer. Working in The Bottoms, a notorious neighborhood on the west side of Columbus, they expect the usual increase in low-level crime the hottest months tend to bring but nothing compared to this. A body is found, and then another, and soon Reed and Billie are on the trail of a...