In the shadowed corridors of power and ancient enmity, "King of Battle and Blood" by Scarlett St. Clair weaves a tale of passion, vengeance, and the delicate dance of the beings that control the night. Isolde de Lara, bound by a fate worse than death, steps into the unholy matrimony with Adrian Aleksandr Vasiliev, a vampire king with a heart as cold as the grave. Her mission is clear: end the war that ravages her lands by ending him. Yet, when her attempt to assassinate her new husband fails, she finds herself ensnared in a web of intrigue, danger, and an unsettling attraction to the very monster she vowed to destroy. Adrian, a creature of darkness and a warrior without equal, presents Isolde with a choice that is no choice at all—succumb to his will or face an existence devoid of her humanity. As Isolde navigates the treacherous court of vampires, she discovers that Adrian is not the only threat lurking in the shadows. Their forced union, meant to be a strategy of revenge, becomes a battle of wills and desires. With every secret unveiled, Isolde must confront the horrifying truth about her husband, their union, and the realization that the heart can be the most deceptive weapon of all.