"After two wilderness guides are gunned down at a remote campsite in a nearby national forest, it's determined that the fatal shots came from Wyoming's Wind River Indian Reservation. Tribal Police Deputy Sage Mendiluze is called in to hike the rugged backcountry and investigate. Sussing out the sniper's perch, he and his Australian shepherd, Peak, just escape becoming two more casualties when an IED is tripped. The site tells Sage there are two perps. The explosion confirms they are devious and extremely dangerous. Soon, more visitors to national parks across America have been murdered. After his display of stellar investigative and tracking skills, Sage -- with Peak at his side -- is recruited by Special Agent Maggie Comstock to join the task force tracking the perpetrators. Every level of government -- even the president himself -- insists this reign of terror must end by the Fourth of July, just days away. Clock ticking toward mayhem, Sage and Maggie are determined to stand in its way. But the mysterious murderers are just as resolute -- and they intend to celebrate the holiday with a bang."-- Provided by publisher.