A thrilling twist on the enemies to lovers’ theme—a deliciously dark vampire romance with a unique steampunk infusion. He promised her vengeance. She threatened to steal his heart instead….Caleb Byrnes works best alone. The cold and brooding blue blood is the best tracker the Guild of Nighthawks has, and he rules the craving within him with an iron hand. Nobody escapes him. Nobody gets the better of him. And nobody has ever come close to unleashing the hunger within him.  Until now….Ingrid Mille...