She married Xander Blackwood, the cold billionaire heir, only to discover she’s a substitute—for the woman he truly loves: her half-sister Nora Whitman. On their wedding night, he delivers a cruel ultimatum: obey the contract or leave. Humiliated but defiant, Lydia Harper walks away to reclaim her life. But Xander’s obsession won’t let go. When desire collides with regret, he stops at nothing to win her. Can Lydia trust a man who once vowed never to love her, or will betrayal and secrets destroy everything before love even begins?