Half vampire smell

Long minutes after that, Susan said, "You're on a case again, aren't you?"
"Does it show?"
She leaned a little away from me, and I drew my arm back. "I smelled it," she said, and stood up to add wood to the fire. "There's blood on you."
"Yeah," I said. "A woman was killed about five feet away from me."


Death Masks, Page 130