A Joe Pickett novel from the New York Times bestselling author of Endangered . Joe Pickett s been hired to investigate one of the most cold-blooded mass killings in Wyoming history. Attorney Clay McCann admitted to slaughtering four campers in a back-country corner of Yellowstone National Park a free-fire zone with no residents or jurisdiction. In this remote fifty-square-mile stretch a man can literally get away with murder. Now McCann s a free man, and Pickett s about to discover his motive one buried in Yellowstone s rugged terrain, and as dangerous as the man who wants to keep it hidden."