From New York Times bestselling author Ryan Winfield, a thrilling tale of friendship, betrayal, and adventure. The final chapter... After leaving the Isle of Man, Aubrey and Jimmy return to the Foundation to confront Hannah about her betrayal and to free the people of Holocene II only to find themselves facing new and more difficult challenges in a world where nothing is as it seems. Don't miss the epic conclusion you'll have to read yourself to believe. Destined to become a classic, The Park Service trilogy will inspire and delight readers of all ages.