Soren Vale has never lost a single minute of a full moon. In nine years as Ashgrave Hollow's finest enforcer, that perfect memory is the one thing the pack trusts him for. Then he wakes in a burned cottage, kneeling beside a stranger's body with blood on his hands. Seven hours of the night are gone, and a ring he has never seen is in his palm, engraved with a date thirty years before he was born. Pack law says a wolf always remembers. Soren has forty-eight hours before that law decides what he is. Alira Fenn, a glasswright, knows his name before he gives it. She has dreamed his face for years, and she remembers repairing that same ring for a man who looked exactly like him. That man vanished, and the town forgot him. A hooded figure called Marrow carves a black thread into Soren's arm and tells him it will reach his heart before the debt is paid. It is a debt he never made, and the Alpha who raised him seems to know exactly what it is. Every hour Soren recovers costs someone else something. The thread is climbing, and the closer he gets to the truth, the less sure he is that the man he remembers being was ever the whole story.