A roar. I looked up to see Savannah running at me from the workshop. As she charged, she swung a hammer back over her head. And I did nothing. I couldn't. I knew this wasn't Savannah and yet that's who I saw—my child running at me, hammer raised, face contorted with hate.

At the last second, I sprang from the step. The hammer smashed into my shoulder blade. Bone cracked.

Paige's bone, not mine. I tried not to think of that, that every blow I took, every injury I allowed, she would suffer afterward. Before the Nix said that, I hadn't considered the implications of borrowing this body, but now, as I danced out of the reach of that flying hammer, it was all I could think about.

I cast a fireball, but the Nix brushed it off. What did she care about burns and scars and broken bones?

It wasn't her body. Only lethal spells could stop her, and that was one step I'd never take, no matter how bad things got. While she'd been in Jaime's body, there had always been that option, however much I would have regretted it. But now, as we faced off, I saw how powerless I really was in this struggle. So long as she was in my daughters body, I wouldn't do anything that might seriously harm her. And so long as I was in Paige's body, I wouldn't take any risk that might seriously harm her.

The Nix lunged, hammer raised. I spun to the side but, still unaccustomed to this body, I stumbled as I came out of the spin. The hammer hit me again in the shoulder, in the same spot. I howled and crumpled.

As I fell, I grabbed for the hammer with my other hand. I managed to snag the head. The Nix swung the hammer and my feet flew out from under me, but I hung on, and the handle slid from her grip.

As I hit the floor, I rolled, ignoring the lightning bolt of pain that shot through my shoulder. I leapt to my feet, still holding the hammer. The Nix rushed at me. I flipped the hammer around and swung. My first instinct was to aim at her upper torso, but at the last second, seeing my daughter's face, I couldn't do it. I swung low. With the sudden change in direction, and the one-handed swing, the blow only glanced off her hip. She grabbed the hammer, threw it aside, and slammed me down to the floor.

In that second, as I went down, I knew there was only one way to save Paige and Savannah.

"I'm sorry, Kris," I whispered as I hit the floor.

The Nix pinned me. Her hands went around my throat. I closed my eyes and sent up two silent words.

"I'm ready."

The room flashed, filling with a bolt of light so bright it blinded me. The light flared again. This time the bolt hit me, filling me with a white-hot heat.

I reached up with my good arm, grabbed the Nix's forearm, and wrenched it from my throat. Her eyes widened. She looked into mine, blinked in surprise, then curled back her lip.

"You think that will help you, angel?" she said.

"I sure as hell hope so," I said as I pushed myself up. "It cost me more than I could afford to pay."

She pinned me again. We struggled. I could feel the new strength coursing through me, but it wasn't enough. My shoulder still pulsed with pain, and I could barely move that arm. The best I could do was hold her off. After a few minutes of tussling for the upper hand, I managed to get on top of her. Before I could reach for her throat, she grabbed both my arms and held them fast. Then she looked into my eyes and smiled.

"You can still do it," she said. "All you need to do is kill me. You must have a lethal spell locked in that little brain somewhere. Go ahead. Try it."

Oh, I had a spell, all right. But not the kind she was hoping I'd use. As the last words of the anti-demon spell left my lips, I tensed, ready to rip my hands from her grasp the moment the shock wave hit her.

Nothing happened.

I tried again, tongue tripping over the words. But it was too late. Paige didn't know the anti-demon spell well enough to cast it reliably, and now I'd wasted her power on a miscast.

I'd sacrificed my afterlife to become an angel, and I still couldn't save them. I was going to fail… and lose everything.

"Something wrong?" the Nix said, laughing.

She pushed up on my forearms and my body started to lift off hers. I struggled to stay on top, but the cast had sapped more than spell-power. She flipped me off her. When I tried to roll out of the way, she grabbed me and threw me onto my back. Then she pounced, landing on my chest so hard the air flew from my lungs. Her face came down to mine. I started a binding spell, a desperate last-ditch attempt to—

"Wait!"

The voice was distant, almost inaudible. A woman's voice, coming from somewhere inside me.

"Try this," it whispered.

Words flew into my head. The start of an incantation. I didn't have time to think. I opened my mouth and said the words, repeating them as they came. Greek. Something to do with wind. A witch spell.

The Nix gasped. Her head flew back, eyes widening in shock. She whipped her head forward, lips twisting in a snarl. Her hands started for my throat, then stopped as her mouth opened and closed, gasping for breath. Her eyes met mine. I saw my daughter's eyes, bulging, her lips turning blue. And I couldn't do it. I stopped casting.

"No!" the voice whispered. "Keep going."

I hesitated. I was going to kill my daughter. My daughter! No, I couldn't do this. I couldn't take the chance. What if—

"Close your eyes and cast. It'll be okay."

I gritted my teeth and forced my eyes closed. Then I restarted the cast. I could hear the Nix gasping. My daughter's voice gasping. My daughter struggling to breathe, dying. I dug my nails into my palms and kept casting, every fiber in me tensed, waiting for that final breath.

Savannah collapsed onto me. She'd stopped breathing. I flipped her over, mouth going down to hers.

Then I saw the spirit-glow pulsing around her. The Nix. I had to stop her first. No! I had to save my daughter. I stopped, frozen, staring at Savannah and the yellowish aura leeching from her body.

Stop the Nix and you save Savannah.

I tore my gaze from my daughter and pushed to my feet. I put out my hands. My lips moved automatically in another unfamiliar incantation and the sword appeared. Hands trembling, I forced my fingers around the hilt. Then I stepped back, looked down at Savannah one last time, and swung the sword at the Nix.

I saw it connect. Saw it slice into her. Saw her throw back her head in a howl of rage. Footsteps raced down the steps. I looked up to see Lucas running down. I opened my mouth to call to him. Then everything went dark.