Best friends Neena and Josie spent high school as outsiders, but at least they had each other. Now, with college and a 2,000-mile separation looming on the horizon, they have one last chance to be together - a three-day hike deep into the woods of the Pisgah National Forest. Simmering tensions lead to a detour off the trail and straight into a waking nightmare…and then into something far worse. Something that will test them in horrifying ways. Stephanie Perkins, the best-selling author of There’s Someone Inside Your House, returns with a heart-stopping, gut-wrenching novel about friendship, survival, and navigating unmarked paths even as evil watches from the shadows.