Chilled to the Bone [Dark Xanadu Book Two]

Vampires aren't supposed to submit to mere mortals, but Doreen is no ordinary vampire. When Charles asks for a week of her submission in exchange for a taste of his blood, she accepts. But as far as he's concerned, a dominant protects his sub -- even if he's a human and her enemies are mages and vampires. He has to find a way to keep her alive long enough to keep her promise -- and long enough to see what love has in store for them when the week is over.