Cady Schuster can't die. Unable for the last century to grow old or succumb to injury, Cady Schuster has lost a lot of people, some more recently than others. She's trying to find new belonging in Harbor Vale, Michigan, among a welcoming little group of fellow ageless folk. Then she meets Paige, a mortal woman who needs a friend—and might need help. Paige's husband rules their church with an authority unquestioned by his congregation. When Paige suddenly severs all communication, Cady determines to find her. Churchgoers warn her off, and the behavior of Paige's husband proves a still bigger warning. Is this friend lost too, or can Cady help her? And how far should an ageless woman involve herself in the conflicts of mortals?