She was always the second choice. Selene Hart spent years watching her perfect sister Vivian take everything—the spotlight, their parents' adoration, and most painfully, Lucien Ashcroft. The powerful Alpha heir Selene has loved in secret for as long as she can remember. The night of the Blood Moon betrothal ceremony was supposed to be Vivian's triumph. Her wedding to Lucien. Her future sealed in silver and moonlight. But when Vivian walks away at the last hour, the families refuse to let the alliance collapse. Selene is pushed onto the altar as the replacement bride. The substitute. The fix. The sister who was always meant to be second. Yet Lucien Ashcroft is not the cold, distant Alpha she remembers. As their marriage of convenience deepens into something far more dangerous, Selene finds herself tangled in a web of old promises, family secrets, and a desire she cannot deny. But Vivian isn't done with Lucien. And she will do anything to get him back. Two sisters. One Alpha. A vow that was never meant to be hers. Will Selene remain the woman who cleans up her sister's messes—or will she finally claim what was never supposed to be hers? She loved him first. Now she'll fight to be his last.