Belle Calloway lost everything the night her pack burned to ash — her home, her family, her name. Taken in by the powerful Ashworth pack out of obligation rather than welcome, she's spent two weeks trying to disappear into a life that was never meant to include her.Then Alpha Rex Ashworth scents her, and every rule he's built his life around starts breaking at once.Rex doesn't do weakness. He doesn't do sentiment. And he definitely doesn't do unclaimed mate bonds three weeks before his political marriage to Selene Williams — daughter of the most powerful allied Alpha in the region.Forced to make Belle his temporary Luna for the sake of appearances, Rex finds himself caught between duty and a pull he can't out-run — while Selene becomes determined to destroy Belle before she can destroy the wedding.But Belle is hiding something more dangerous than a broken heart. Her pack wasn't wiped out by rogues, as everyone believes. Her father made a blood-debt deal that got them all slaughtered — and Belle still carries the mark of that unpaid debt hidden beneath her sleeve.Now Rex has thirty days to choose: the alliance that secures his pack's future, or the mate he swore he'd never want.Some bonds aren't meant to be resisted. Some debts are paid in blood.