For five years, Nessa Calder has lived in a locked room beneath her family's estate. Her crime? She was born without a wolf. In a world where every werewolf receives their wolf at eighteen, Nessa's existence is considered an embarrassment. Her family hides her from the pack, telling everyone she died years ago. On her twenty-third birthday, the most feared Alpha in the northern territories arrives to collect her. Riven Marrick refuses to explain why he wants her, taking her to his heavily guarded fortress instead. But Nessa soon discovers that Riven isn't keeping her prisoner because he hates her. He's protecting her from someone hunting women born without wolves. And Nessa may be the last one alive. Then her forgotten wolf finally awakens—and whispers Riven's name.