"Thank you," Rurik offered a small smile. He didn't care for the knife, but he didn't think it wise to try to take the weapon from Kai. If he was correct in his assumption that Kai had been affected by some spell that sent him back in time a hundred years or so, Rurik thought he was mostly safe from the vampire's instability. He was a willing food source, and his blood was strong. Kai wouldn't kill him, so long as he bared his neck.