Shadow Pact
Until Emily, William had never shared blood with anyone.
Most vampires shared blood with any number of humans they claimed as their own, but that was only to mark their familiars—the people they chose as their food source—so other vampires would know they were already owned and under protection. It was almost like marking cattle. It also allowed them to have some control of the human, and the ability to know where they were.
"No," William finally answered Empusa's question. "We've never shared blood."
Empusa made a frustrated sound. "When I get to you guys, I may stake Paoli myself," he announced without heat. "I know he tries to keep as close to a human life as possible, but some things are