"Oh, sure," Bob said. "It's really easy. And when you use a talisman to turn into a wolf, you lose all of your human inhibitions and so on, and just run on your unconscious desires, with the talisman-spirit in charge of the way the body moves. It's really efficient. A huge wolf with human-level intelligence and animal-level ferocity."

I eyed Bob, and gathered up the other ingredients for the stimulant potion: a morning donut, for taste; a cock's crow, for hearing; fresh soap, for smell; bits of a washcloth, for touch; and a beam of dawn sunshine for sight; a to-do list, for the mind; and a bit of bright, cheerful music, for the spirit; and the potion was simmering along nicely.

Bob said nothing while I added the ingredients, and when I was finished I said, "Most people don't have the strength to control a spirit like that, I'd think. It would influence their actions. Maybe even control them. Suppress their conscience."

"Yeah. So?"

"So it sounds more like you'd be creating a monster."

"It's effective," Bob said. "I don't know about the good or the evil of the thing. That's something that only you mortals worry about."

"What did you call this flavor again?"

"Hexenwolf," Bob said, with a strong Germanic accent. "Spell wolf. The Church declared war on anyone who chose to become a Hexenwolf, and burned a huge number of people at the stake."

"Silver bullets?" I asked. "Bitten and turn into a werewolf?"

"Would you get off this 'bitten and turn into a werewolf' kick, Harry?" Bob said. "It doesn't work that way. Not ever. Or you'd have werewolves overrunning the entire planet in a couple of years."

"Fine, fine," I sighed. "What about the silver bullets?"

"Don't need them."

"All right," I said, and continued jotting down information to put together for Murphy in a report. "Hexenwolf. Got it. What else?"

"Lycanthropes," Bob said.

"Isn't that a psychological condition?"

"It might also be a psychological condition," Bob said. "But it was a reality first. A lycanthrope is a natural channel for a spirit of rage. A lycanthrope turns into a beast, but only inside his head. The spirit takes over. It affects the way he acts and thinks, makes him more aggressive, stronger. They also tend to be very resistant to pain or injury, sickness; they heal rapidly—all sorts of things."

"But they don't actually shapeshift into a wolf?"

"Give that boy a Kewpie," Bob said. "They're just people, too, but they're awfully fierce. Ever heard of the Norse berserkers? Those guys were lycanthropes, I think. And they're born, not made."

I stirred the stimulant potion, and made sure it was at an even simmer. "And what was the last one? Loop what?"

"Loup-garou," Bob said. "Or that was the name Etienne the Enchanter used for them, before he got burned at the stake. The loup-garou are the major monsters, Harry. Someone has cursed them to become a wolflike demon, and usually at the full moon. That someone's got to be really powerful, too, like a major heavyweight sorcerer or a demon lord or one of the Faerie Queens. When the full moon comes, they transform into a monster, go on a killing spree, and slaughter everything they come across until the moon sets or the sun rises."

A sudden little chill went over me, and I shivered. "What else?"

"Supernatural speed and power. Supernatural ferocity. They recover from injuries almost instantly, if they become hurt at all. They're immune to poison and to any kind of sorcery that goes for their brain. Killing machines."

"Sounds great. I guess this hasn't happened all that often? I'd have heard something by now."

"Right," Bob said. "Not often. Usually, the poor cursed bastard knows enough to shut himself away somewhere, or to head out into the wilderness. The last major loup-garou rampage happened around Gevaudan, France, back in the sixteenth century. More than two hundred people were killed in a little more than a year."

"Holy shit," I said. "How did they stop it?"

"They killed it," Bob said. "Here's where the silver bullets finally come in, Harry. Only a silver weapon can hurt a loup-garou, and not only that, the silver has to be inherited from a family member. Inherited silver bullets."

"Really? Why would that work and not regular silver?"

"I don't make the laws of magic, Harry. I just know what they are and have an idea of when they're changing. That one hasn't changed. I think maybe it has something to do with the element of sacrifice."

"Inherited silver," I mumbled. "Well. We'll just have to hope that this wasn't a loup-garou, I guess."

"If it was a louper, you'd know," Bob said wisely. "In the middle of this town, you'd have a dozen people dead every time the full moon came around. What's going on?"

"A dozen people are dying every time the full moon comes around." I filled Bob in on the Lobo killings, giving him all the information Murphy had given to me, and started on the next potion. Into the water went the ingredients: plastic wrap for sight; a bit of plain white cotton, for touch; a little deodorant for smell; a rustle of wind for hearing; a leaf of plain old lettuce, for taste; and finally I threw in a blank piece of paper, for the mind, and some elevator music for the spirit. The ingredients were boring. The potion looked and smelled boring. Perfect.

"Lot of dead people," Bob commented. "I'll let you know if I think of anything good. I wish I knew something else."

"I want you to learn more," I told him. "Go out and see what else you can round up on werewolves."

Bob snorted. "Fat chance, Harry. I'm a spirit of intellect, not an errand boy." But when I said the word "out," Bob's eyes glittered.

"I'll pick you up some new romance novels, Bob," I offered.

Bob's teeth clicked a couple of times. "Give me a twenty-four-hour pass," he said.

I shook my head. "Forget it. The last time I let you out, you invaded a party over at Loyola and set off an orgy."

Bob sniffed. "I didn't do anything to anyone that a keg wouldn't have done."

"But those people didn't ask for you to get into their systems, Bob. No way. You had your fun, and I'm not letting you out again for a while."

"Oh, come on, Harry."

"No," I said flatly.

"It would only be one little night o—"

"No," I said again.

Bob glowered at me and demanded, "New romances. None of those tatty used ones. I want something off the bestseller list."

"I want you back by sunrise," I countered.

"Fine," Bob snapped. "I can't believe how ungrateful you are, after everything I've done for you. I'll see if I can get someone's name. There might be a spirit or two who could get you some juicy information." The orange lights that were his eyes glittered and then flowed out of the skull in a misty cloud of lambent illumination. The cloud flowed up the ladder and out of my laboratory.

I sighed and set the second potion to simmering. It would take another hour or two to cook the potions, and then to shove the magic into them, so I sat down with my notebook and started writing up my report. I tried to ignore the headache that was creeping up the back of my neck toward the crown of my head, but it did little good.

I had to help Murphy nail the killer, whoever it was, while avoiding any trouble with the FBI. Otherwise, she was out of a job, and even if I didn't end up in jail, I would be out of a living myself. Johnny Marcone's man had been killed, and I would be a fool to think he would stand idly by and do nothing in response. I was sure the gangster would rear his head sooner or later.

Aside from all of that, there was a monster of one kind or another lurking in the dark, and the police and the FBI had been helpless to stop it. That left only me, Harry Dresden, your friendly neighborhood wizard, to step in and do something about it. And, if the killer figured out that I was getting involved, he would doubtless start gunning for me next. My troubles were multiplying.