Raphael's hand tightened on the hilt of the knife. His knuckles were white. He spoke to Magnus. "I have no soul," he said. "But I made you a promise on my mother's doorstep, and she was sacred to me." "Santiago- " Sebastian began. "I was a child then. I am not now." The knife fell to the floor. Raphael turned and looked at Sebastian, his wide dark eyes very clear. "I cannot," he said. "I will not. I owe him a debt from many years ago.