A Perfect Blood by Kim Harrison

body here was the same they’d used at the school. It was fairly common in the higher charms, but drawing it in blood wasn’t. Someone was playing at being a demon.
    “The victims at the school were decomposing badly when we found them,” Nina said, distracting me, “but they had clearly been restrained. The second victim had been kept sedated. We don’t know about this man. The tests haven’t been run yet, but he’s clearly been held against his will.”
    Jenks took off from my shoulder, his wings clattering in anger. “Decomposed!” he exclaimed, clearly disgusted. “In this weather? Just how long had they been dead?”
    Nina ignored his anger. “The three at the school had been dead somewhere between eight and ten days. We know they went missing on the fourth, but we aren’t sure how long they were dead before we found them Tuesday.”
    Tuesday? Like three days ago Tuesday?
    “Tink loves a duck!” Jenks exclaimed. “What have you been doing? Sitting on your thumb and spinning?”
    “Jenks!” I exclaimed, and the undead vampire let some of his anger show, Nina’s eyes squinting. The anger wasn’t directed at us, telling me he wasn’t happy with how the investigation had been handled, either.
    “The best we can tell, they probably died between the eighth and the tenth,” Nina said.
    I really wanted off this bandstand, but I didn’t want to look squeamish.
    “Magic killed them, not blood loss,” she added, holding her breath when the wind blew and the man’s blood-caked hair moved in the breeze. “That came afterward. Apart from the girl at the school, they died from a transforming spell that wasn’t done properly. We can’t be sure until the necropsy, but if this man follows the pattern, his insides will be as deformed as his outsides. They died because their bodies couldn’t function.”
    Jenks was a tight hum at my ear, and he was slipping a green dust. “Hey, Rache, you mind if I check the sitch with the local pixies? They aren’t hibernating yet.”
    Nina stiffened. It was a slight movement that probably would have escaped my detection if I hadn’t been looking for it. The dead vampire thought it was a waste of time, but not breaking our eye contact I nodded. “Good idea, Jenks.”
    “Back in a sec,” he said, and in a flash, he was gone. I wished I could fly away, too.
    “Whose blood made the spells that did this?” I asked, starting to get a bad feeling. Three teenagers killed, then a few days later, a second victim, then a few more days, and then Thomas.
    “What an interesting question.” Nina backed up to lean against the railing. “We didn’t catch on that fast—Ms. Morgan.”
    Her stance said I knew too much. Maybe she was right. Maybe it just took a demon to catch a demon. “Whose blood twisted the spells that killed them?” I asked again, jaw clenching.
    “At the school, they died from their own. The second victim died from a spell kindled with blood from one of the teenagers. We don’t know yet whose blood this man died from.”
    My shoulders slumped as I exhaled, and Ivy, who was looking from the bloody floor to one of the photos to compare the glyphs, met my eyes, reading my worry. Crap, they were leapfrogging. Taking the blood from the last victim to capture and experiment on the next. I put a hand to my middle and looked at the pentagram around me, wishing I had enough guts to take my charmed silver off and see where the nearest ley line was. Close, I bet. Graveyards were often built on them. If Jenks were here, I could ask him.
    “Our working theory is once the perpetrators harvest sufficient blood to play with, they simply use the blood of the previous victim to experiment on and torture the next,” Nina said.
    Play. That was a good word. It was what I’d already figured out, but hearing it made me more nauseated yet. At least there’d probably be no bodies older than the ones found at the school.
    “Experiment?” Ivy looked up from her pages.
    Nina drew