By the Angel. Charlotte exhaled slowly, lowering the device to her side. “De Quincey? It can’t be…” “You know who he is?” Mortmain’s voice was dull. “Well, I suppose you would.” “He’s the head of a powerful London vampire clan,” Charlotte said almost reluctantly, “a very influential Downworlder, and an ally of the Clave. I can’t imagine that he would—”