Reluctantly, I pulled out my necklace and showed it to them. Samuel frowned. The little figure was stylized; I suppose he couldn't tell what it was at first. "A dog?" asked Zee, staring at my necklace. "A lamb," I said defensively, tucking it safely back under my shirt. "Because one of Christ's names is "The Lamb of God."" Samuel's shoulders shook slightly. "I can see it now, Mercy holding a roomful of vampire at bay with her glowing sheep." I gave his shoulder a hard push, aware of the heat climbing to my cheeks, but it didn't help. He sang in a soft taunting voice, "Mercy had a little lamb...