The worst thing Elara Veyne ever does is kiss her husband's best friend. The second worst is wanting him to do it again. For five years, Cassian Rooke looks at her like he can't stand her. She believes him until her birthday, when she catches her husband cheating and discovers that all those late nights at work are lies. Broken and humiliated, she kisses the one man she is never supposed to touch. Cassian doesn't call it a mistake. He tells her to leave her husband. But five years of marriage, memories, and the desperate hope that Lucien can still become the man she marries keep her from walking away. Then she discovers a secret that changes everything. Cassian's coldness was never hatred, and that Lucien knows far more than he has ever let on. Now Lucien knows about Cassian and her. And he doesn't want a divorce. He wants to win. Because she is never just his wife. She is the prize. And if losing her means losing to Cassian, Lucien will destroy all three of them before he lets her go.