He promised to protect her. But what happens when the hunter becomes the prey? Welcome to Shadow Ridge, where Longmire meets Jericho. In today's world, law enforcement agencies across the country rely on forensic tools, DNA testing, and crime labs. But what if that technology was suddenly no longer available? No one in the small, west Texas town of Shadow Ridge knows what took down the power grid, or when it's going to be back up, but everyone knows exactly where they were the moment it went down. And now, with no electricity, no internet, and no modern technology, the men and women responsible for keeping the town safe are going to have to learn how to fight crime all over again. Deputized by his father in the isolated town of Shadow Ridge, Levi McQuaid is caught up in a missing persons case that has the potential to destroy everything he holds dear. Levi searches for the sister of an old friend, Ava Solomon, but the situation takes a deadly turn when the search leads them on a dangerous trek across the west Texas desert. The devastating truth proves much worse than they'd imagined. And now that they know the truth . . . getting out alive might be impossible.