"Please come in," she said, standing back. I wondered whether she'd have done the same thing if we'd had a shotgun. Something made me think she would. "Thank you for coming out. I don't...I just don't know what to do. I don't believe any of this is really happening."

"Can you tell us what exactly is going on?" Aubrey asked.

The house had hardwood floors and pale patterned rugs. Tin Mexican wall sconces threw white light up the walls, and clunky, colorful paintings struggled to give individuality to furniture that all came from IKEA. I noticed that there was a wicker basket by the fireplace cradling a crushed pillow slicked with white and brown dog hair.

"It started maybe a week ago," Candace Dorn said. "Charlie-that's my dog-woke up acting really strange. He was biting himself and barking at my fiance, who he always just loved before. He wouldn't eat, he wouldn't let me go out of the house. He's never been like that before."

"What did the vet say?" I asked.

Candace paced the length of her living room without answering me. Aubrey sat on the arm of an overstuffed chair.

"I don't believe in...voodoo or whatever," Candace said at last.

"What makes you think this is voodoo," I asked. "Or, you know, whatever?"

Candace opened her mouth, closed it, then walked back toward the rear of the house. Aubrey met my eyes with an unspoken question. I followed her.

The kitchen showed some signs of disarray. One of the cabinet doors was resting against the wall, its hinges broken. The wooden table had a long, fresh gouge white as a scar against the dark varnish. Candace walked to the back door, and I realized what about her stance bothered me. My first semester at college, I'd agreed to play tackle football with some friends even though they'd been drinking. I'd broken one rib and cracked another. For a month afterward, I'd walked just like Candace did now.

When she opened the door, a German shepherd was waiting. He froze when he saw us, his gaze shifting from Aubrey to me and back again. This was Charlie.

"These are the people I called," Candace said. Her voice was unsteady. "They're the ones who can help."

I had never watched an animal's expression change before. Charlie's unease became something else. He nodded to me and then to Aubrey. If he'd been human, it would have been a perfect gesture of masculine greeting.

"Charlie," I said, acting on a hunch, "could you go to Aubrey's right hand and touch it with your left forepaw?"

Charlie barked once, and then did exactly as I'd asked. Aubrey's brows rose. Candace Dorn touched her hand to her mouth. There were tears in her eyes.

"That isn't Charlie in there, is it?" I asked.

She shook her head. The dog looked up at me with an intelligence that I could only think of as human. You wanted proof, I told myself. You wanted to be sure.

"Before this happened," Aubrey asked, "had anything else changed? A new piece of art or some new person coming into your home? Was anything different?"

"No," she said. "Nothing happened. It was just one day..."

"And when did your fiance start beating you up?" I asked.

The silence was total. When Candace spoke again, she sounded defeated.

"After I called you," she said. "After he found out that I'd called."

Aubrey let out his breath like someone had punched him. Charlie the dog looked up at me, brown eyes fearful and resolute. When I knelt and put my hand on his ruff, he whimpered once.

"There are some things that can displace people," Aubrey said. "Move into a body and cast the former owner out."

"Like into an animal," I said. "Unclean spirits. So when you said that you could handle the easy ones, this wasn't what you had in mind, was it?"

"Not so much, no," Aubrey said. "I think we'll need Ex. If any of us can fix this, it'll be him. He used to be a Jesuit. Casting out spirits was one part of the coursework."

Candace Dorn stepped forward, her hand out as if she was stopping us. The unease in her expression made perfect sense to me. We'd just come into this sudden surreal h.e.l.l that her life had become and started talking like we understood it.

"What are you saying?" she demanded. "What's going on here?"

"There are things called riders," I said, surprised by how informed and competent I sounded given that I only knew what I'd been told in the last day or so. "They're spirits. Our best guess is that one of them took over your fiance's body and pushed his soul, or whatever you want to call it..."

I pointed at the dog. Charlie whined again. Candace didn't kneel down so much as melt. Her spun, emptied expression was perfectly familiar. I'd felt exactly like that since my first visit with Eric's lawyer.

"Aaron?" she said.

The dog-Charlie or Aaron or some combination of the two-stood up and walked over to her. The movement had a dignity that spoke as eloquently as words. I would never have done this to you. Candace started crying in earnest now, confusion and fear and relief. Aubrey already had his cell phone out. His face was gray and serious. I motioned him to come out to the front room with me.

Candace and her dog needed a moment alone.

Aubrey sat on the couch, explaining the situation in fast, telegraphic sentences. I could hear Ex's voice compressed to a thin, synthesized version of itself coming from the phone. I stood with my arms crossed, looked out the window into the hot August night, and tried to make sense of my own heart.

My sense of doubt and confusion was gone, and in its place, something richer and stranger was growing. The tattooed a.s.sa.s.sins, Midian's curse, Eric's death. My alleged powers. None of those had been as convincing as the expression in the dog's eyes.

So, okay, riders existed. Aubrey and Chogyi Jake and Ex and Midian weren't suffering a group delusion. They were telling the truth. I'd seen the evidence now, and so at last I could really believe.

And Eric. I was standing now where he would have been, doing-however poorly, however uncertainly, with my near total ignorance intact-what he would have done. I was proud of him, and sad beyond words that I hadn't known what he was when I could still have asked him about it.

There had to be a reason he hadn't told me. All the things he'd done for me over the years, all the little intercessions that kept me out of trouble with my dad. He'd been watching out for me then, and so maybe he'd been watching out for me in this too. One thing was certain: there were more kinds of danger in this than I had ever imagined.

But he'd also left it to me. He'd left me the keys to the kingdom. So he hadn't thought there were more kinds of danger than I could handle.

And that, oddly, was the answer I'd been looking for. The warmth in my heart was pride that he'd chosen me to take up his work. To step into lives like Candace's. It beat the c.r.a.p out of being a college dropout with a bad reputation and no family. And maybe he'd known that too.

Still lost in speculation, I didn't notice the police cruiser slowing down until it pulled in behind Aubrey's minivan. I watched the cop get out, consider the house and the back of the minivan, then turn on the flashing lights and mutter into a radio strapped to his lapel. Aubrey cut the connection with Ex and looked out with me. He muttered something obscene.

"He must have seen the shotgun. We can't have this guy around when Ex shows up," Aubrey said. "Let me go see what's the trouble."

He'd started walking past me toward the door, then stopped, his weight tugging at me. He turned to look at me, and I realized that I'd grabbed his arm. I hadn't meant to, but having done it, I knew why I had.

"Don't. Don't go," I said. Then, louder, "Candace? Hey, Candace. Your fiance wouldn't be a cop, would he?"

Seven.

He came up the same path I'd walked with Aubrey half an hour before, the palm of his hand resting on the b.u.t.t of his pistol. The flashing lights silhouetted him and hid his face. At my side, Candace was staring out the window and murmuring a constant string of syllables equal parts prayer and vulgarity. The dog stood between her and the door, still and silent and thoroughly undoglike.

From my glimpses through the window, I guessed the man was around two hundred pounds. He had a Taser, Mace, a pistol. He had a badge. For all I knew his murmured conversation on his lapel radio had been calling more police to his cause. Plus which, he was a supernatural beastie capable of G.o.d only knew what.

We had Aubrey, me, Candace Dorn, and a very intelligent dog. I didn't like our chances.

"Okay," Aubrey said nervously. "We're going to be okay. We'll just...we have to just..."

The man reached the door and pounded on it. The house itself seemed to tremble.

"Candace!" the man shouted. "Open the door!"

It was the voice-the anger and power and implicit violence in it-that snapped me into action. I took Candace by the arm, shaking her until her eyes shifted to mine. Her face was pale.

"You need to get out of here," I said. "You and Charlie head out the back. Go to a neighbor's or a friend's. Anyplace it'll take him a while to find you."

"That isn't Aaron," she said. "It's his body, but that isn't Aaron."

"I know," I said. "Leave this part to us. Just get out. Do it now."

The dog nuzzled her hand, whining slightly, then jerked its muzzle toward the kitchen. Let's go. Candace drew a long, shaking breath while the thing in her fiance's body hammered the door again. She nodded, pulled me into an embrace as sudden as it was brief, and then she and Charlie the dog were gone.

"How long until Ex gets here?" I asked, trying hard to keep my voice from shaking.

"Half an hour if there's no traffic and he's speeding," Aubrey said. "An hour if there is and he isn't. Did you have a plan besides getting those two out of harm's way?"

"Nope," I said.

"Then we'll probably want to keep his attention on us until they're clear," he said, as if this was all perfectly sane and acceptable. I saw then how someone could love Aubrey. "Hold on a minute!" he yelled. "We're coming!"

The thing at the door paused, surprised (I guessed) by a man's voice and the unhurried, casual tone Aubrey had taken. Aubrey pulled a cloth bag from his pocket and pressed it into my hand.

"Ashes and salt," he said. "It may help block or absorb anything it tries to do."

"You mean besides shoot us," I said. The bag was heavier than I expected.

"Besides that," Aubrey agreed.

"Open this f.u.c.king door and do it now!" the cop shouted.

"Who is it?" Aubrey asked, his voice loud enough to carry through the door. "Can I see some identification, please?"

The shots weren't like the ones you hear on TV or in the movies. Two dry cracks, quieter than the pounding of the thing's fists, and the wood around the doork.n.o.b bloomed into splinters. The ridden policeman kicked the door open so hard it almost came off its hinges. Aubrey leaped back, diving for cover. I stepped around the corner, the cloth bag gripped tight in my hand.

"Where is she?" the thing in the cop's body demanded. The voice had lost any vestige of humanity now; the words were flies and saw blades. "Give her over, and I might let you live."

"She's upstairs," Aubrey lied. "Just leave me out of it."

It surged into the room. I hadn't been prepared for the change. Its skin was darker than a bad bruise and tinted blue as a storm cloud; the head that canted forward from the shoulders was long-jawed and carnivorous, the eyes the yellow of cat p.i.s.s. Its chest worked like a bellows, ripping the police uniform and popping the Velcro fastenings of the bulletproof vest. I wasn't afraid of being shot anymore. I was just afraid.

Aubrey was on his knees, struggling to stand. The creature raised a hand, points of metal or chitin glittering on its fingertips. With a sense of being in a dream, I watched myself swing forward, grab those powerful fingers, and twist from my waist. Something in its wrist popped, and it let out a yell that seemed like it would break gla.s.s.

The impact when it slammed me against the wall drove my breath out. Its eyes were fixed on me. I saw Aubrey diving toward it, saw its leg lash out, saw Aubrey fall again. Its good hand was around my throat. The air was getting thin. I scratched at its eyes, my arms faster than I would have thought possible but still not fast enough. I didn't see its wounded hand cut into my side; I only felt it.

The cut was cold. My blood spilling down my ribs felt like ice water. And then something pushed in under my skin, something slick and cool and ancient beyond words. Instinctively, I knew the rider was entering me, trying to take my body as its own. I felt an answering warmth rise from the base of my spine to my heart to my throat. It felt like a fireball, and I shouted as I used it to push the invader out.

The creature stumbled back, dropping me to the ground. Its eyes were wide and uncomprehending. I thought I saw a flicker of fear before it launched itself at me again. I leaped toward it, inside its swing, and brought my fist up into the soft place under its jaw. The bag of ashes and salt burst like a water balloon. The thing choked and stumbled back. Aubrey appeared from nowhere swinging a fire poker like it was a machete. The beast raised its arms to protect its head against the a.s.sault, and for five or six seconds I thought we stood a chance.

"Jayne! Stay back!" Aubrey shouted, but I was already in motion. It caught my leg as I tried to kick it, lifting me up like a twig. My knee shifted, and I shrieked with pain. I caught a glimpse of Aubrey-red-faced, his teeth bared in rage-flailing at the thing's back with the poker. I was airborne. The plaster and lath wall gave when I hit it, but the sound of the fight was m.u.f.fled now. Aubrey's yelling was distant and soft, the beast's answering howl no more than unpleasant. I tried to rise to my knees, but it didn't go as well as I'd hoped.

I opted for sitting, and when I looked up, the thing was squatting before me. It didn't look even vaguely human now. Its clothes were in ribbons, and the small glimmering badge that hung from one strip of shattered cloth seemed like an insult. The boots were strips of leather clinging to wide hooves. His belt...

I blinked, trying to gather myself. His belt was on the floor behind him. The gun was still in its holster.

"What are you?" it buzzed. I had the impression there was a light inside its mouth, like something was burning in there.

"My mother's daughter," I said blearily; I'd meant Eric when I said it. My brain was clearly getting scrambled. I dropped to my belly and kicked off from the wall, scooping up the belt, drawing the gun, and twisting back to face the thing almost before it could react. Almost, but not quite. Its fist came down on the bridge of my nose and the world turned monochrome and quiet.

I almost didn't see the dog attack.

I wavered there on the edge of consciousness, and when I came back, the beast was grabbing at the German shepherd, whose teeth were buried in its neck. I raised the gun, but Aubrey put his hand over mine, pushing the barrel away.

"Can't kill the body," he grunted. "Need the body. Aaron! Close your eyes."

I couldn't tell if the dog complied, but Aubrey staggered to his feet, a small black cylinder in his fist. There was a hissing sound, and the beast howled, scrabbling at its eyes with fingers that gouged great strips of flesh from its face. The dog leaped back, whining, and my own eyes started to water. Mace. I really didn't think that was going to stop it. I raised the gun again, but Aubrey had his arms spread wide, like he was gathering in the air itself. I saw his ribs flex as he breathed in, and I realized his shirt had been ripped apart somewhere in the violence. When he shouted, it wasn't a human sound. It rang like a bell, like there was music in it, like there was an angel speaking my name in a voice so low it deafened.

The beast twisted, shuddered, and sat. Its skin grew pale, its head thin, its face human. Aaron the fiance lay on the splinters of a couch, his body slack. Aubrey staggered and fell to his knees.

I crawled over, putting my hand on Aubrey's thigh. He was trembling.

"Is it dead?" I managed to croak.

"Bound," he said. "Sleeping. Should be okay until Ex gets here."

"Good trick."

"Eric showed me."

"Could have tried it a little earlier, though," I said.

"Yeah, I was thinking that myself," he said, then smiled. There was blood on his teeth. I smiled back, and the dog came to us, licking Aubrey's face nervously. I wanted to sleep, but instead I staggered to my feet and closed the blinds and the front door. The place was a ruin. Couch, coffee table, overstuffed chairs-all of them were broken. The walls were shattered in three places, and the gla.s.s shutters guarding the fireplace were shards clinging to strips of warped copper. I walked back to the kitchen, almost surprised to see it intact. I washed my hands until the shaking got too bad, and then I just stood there, leaning against the counter.

"You're hurt," Aubrey said from the doorway.

"No. I'm..." I looked down at my blood-soaked side. "Oh. Hey, yeah. I'm hurt."

I laughed, and the pain shot out from my side to the base of my skull. Somehow that seemed hilarious, and I sank to the floor in a feedback loop of laughter and pain. I watched Aubrey's feet come across the tile floor, felt his hands lift me up to sitting. When he pulled off my shirt, I didn't stop him. I felt wrung out and quiet now. Through the door to the ruined front room, I saw the dog sitting, its eyes fixed, I a.s.sumed, on the newly human body resting in the wreckage. Aubrey's left eye was swelling shut, and I could see a bruise darkening at his collarbone. His hands shook. He touched a warm cloth to my side and I winced.

"I'm sorry," he said.

"It's okay," I said.

"No, I mean I'm sorry I brought you here. This was way more than I expected. It was stupid of me."