Calista Vitalis vowed never to let anyone control her again. But in a world where loyalty and power are everything, she has no choice but to marry Leon Boscos, a man as ruthless as he is captivating. Forged by loss and driven by vengeance, Leon has become an unrivaled force determined to protect what’s his. Yet, their union isn't about love—it's a strategic alliance, a dangerous game where passion is a weapon. With every stolen touch and heated glance, the lines between revenge and desire blur, igniting an intensity neither anticipated. As past enemies resurface, bringing deadly threats, Calista and Leon must confront their own dark secrets. Will their fiery bond consume them, or will their mutual vengeance forge a strength no enemy can break? In this explosive conclusion to the Sisters of Wrath series, desire is deadly, and love could be the ultimate weapon. Perfect for readers who crave fierce heroines, ruthless antiheroes, and passion so dangerous it could destroy them both—fans of JT Geissinger, Sophie Lark, and Rina Kent will be captivated by Power .