Blood Oath

Evelina Thorn's life ends the night her mother kills the son of the Vampire King. Bound by an ancient Blood Oath, Evelina is dragged from her home and forced into the cursed kingdom of Gorsa, where she is claimed as payment for a crime she never committed. Trapped in a castle ruled by the ruthless Dark Lord Adrien Ravenscroft, she becomes a prisoner in a court built on blood, power, and terrifying secrets.
But the castle holds more than monsters. Ghosts whisper that Evelina is the key to breaking a centuries-old curse. A string of brutal murders threatens to ignite another war between vampires and werewolves. And the only person willing to help her uncover the truth is Lucien Ravenscroft-a dangerous half-fae, half-vampire prince who once nearly killed her. As ancient magic awakens within her, Evelina discovers she is far more than an ordinary human.
To free the dead, survive a kingdom on the brink of war, and claim her own future, she'll have to choose between vengeance and love. Because some blood oaths were never meant to be broken.