Mick Hardin is supposed to be retired, transitioning to a civilian life. Back in the hills of Kentucky after a two-year absence, he'd planned to touch down briefly before heading to France, marking the end of his twenty-year Army career. But in Rocksalt, trouble is brewing. Mick's sister Linda, recently reelected as sheriff, and her deputy Johnny Boy Tolliver are investigating the murder of Pete Lowe, a sought-after mechanic at the local racetrack. Mick doesn't want to get involved; he wants to say his goodbyes and get out of Dodge. But when he reluctantly agrees to intervene in a family dispute requiring a light touch, he uncovers evidence of an illegal cockfighting ring and another body, somehow linked to the first. And then Linda steps into harm's way, leaving Mick to solve the crimes himself.