The Knight by Cara Crescent

A Watcher’s curse…
Raised by one of the most hated and feared witches, Katherine O’Hickey survived her mother’s abuse to become a healer; a witch with the touch and the heart to mend animals, humans, and daemons alike. Although forced to keep her mother’s secrets, she’s still filled with guilt and regret for not preventing the evil her mother caused. Righting some of those wrongs does Kat as much good as the people she helps, which is why she spell-traveled a heavily scarred, tough, muscular—very sexy—vampire to her home. Unfortunately, healing the Harbinger’s battered body is easier than healing his broken mind, and Kat is running out of time to save him and prove he’s not the monster everyone thinks.

A healing touch…
Julius Crowley remembers nothing of himself or his life prior to waking up in a house he doesn’t recognize, with a beautiful witch who claims he’s her mate. There’s a voice in his head telling him to do horrible things to himself and a body that obeys that voice’s commands no matter how much he tries to resist. The scars covering his body, the voice, and the terrible itching—like spiders under his skin—convinces him he’s lost his mind. But Katherine knows better, and together they must race against the clock to end Julius’ torturous possession before the Watcher fulfills his revenge: The destruction of mankind.