There were nothing but blackened lumps where Annah had been standing… and farther off lay Impervia's body, outside the range of the explosion but sprawled deathly still. I couldn't bring myself to take a closer look. What would be the point? Let her rest in peace.

So there I was: last man standing. Pelinor would say that made me the hero of our quest; but I'd done nothing anyone would call heroic. The hard work came from my friends-the protecting, the dying. All I could do was ensure they hadn't died in vain.

Element gun in one hand, ‹BINK›-rod in the other, I approached the laser cage.

The door of the airlock shack had one simple control-a lever with three positions marked INNER SHUT, BOTH SHUT, OUTER SHUT. It was currently set to the last: outer door closed, inner one open. I moved the switch to the middle and watched as the inner door slid into place. The imprisoned Lucifer had withdrawn into the main area of the cage, taking Sebastian with it. I guessed it didn't want to leave the boy in the airlock shack where he might be easier to rescue.

Deep breath. I moved the lever again.

The outer door opened. I had my gun set to shoot flames, ready to scorch any bits of Lucifer hiding in the airlock. But the shacklike space seemed perfectly clean: white walls, white floor, white ceiling, where the tiniest black grain would show up clearly. No doubt the airlock had cleansing devices that sanitized the place every time the doors cycled. I didn't know how decontamination was possible without killing any humans in the airlock… but if the Keepers harvested lightbulbs from the Lucifer's mass, people must go in and out through the shack all the time. One just had to trust that the Sparks could eradicate alien cellules while leaving Homo sapiens intact.

I stepped into the airlock. The inside wall had a three-position lever like the one outside. I moved the lever to both shut and waited.

A flat plane of green light rose from the floor, like a platform of jade ascending around me. The surface was too glossy to see through, but I could feel a tingle as it climbed my legs: like the brisk scraped sensation after drying oneself with a rough towel. The feeling increased to wrenching pain as it reached my abdomen-an unknown force clawing my intestines, scouring deep in search of alien intruders. Some part of my mind wondered what kind of energy the light was, how it could distinguish between human flesh and alien particles. But I didn't care that much. Like a man plodding the last hundred meters of a marathon, I just wanted to get this over.

The jade surface rose. As it reached my heart, congestion squeezed my chest. I tried to breathe normally; I closed my eyes and waited, feeling the tingle flush up my throat, my face… then a burst of jade flared as it swept past my retinas.

When I opened my eyes, the plane of light was vanishing into the airlock roof. I caught my breath, lifted my weapons, and moved the control lever to open the inner door.

The Lucifer didn't attack. It didn't even move. Its black powder mass sat silent. Waiting.

"Release the boy," I said.

No response. As if the creature didn't understand my words. But I was certain it knew what I was saying.

I raised my gun. "Give me the boy or I'll hurt you. Kill you if that's possible. Heaven knows why the Sparks kept you alive at all; but I'm sure they'd rather see you dead than loose in the world. So let the boy go."

Still no motion visible in the black heap, but a rustling sound came from the mound's dusty heart. The Lucifer towered above me, three times my height: like the mountain of coal that was dumped behind the academy at the start of each winter. My Element gun was no more than a pea-shooter compared to the Lucifer's bulk; the gun's supply of fire and acid could only braise the monster's surface. If the beast withstood the immediate pain, I'd soon run out of ammunition. As for the glittering ‹BINK›-rod, I didn't know how much mass it could "roll aside" at any one time… but surely not the entire mound. I might banish a few handfuls of black before I was overwhelmed, but that would just delay the inevitable. Sebastian would remain trapped, the batteries powering the cage would run dry…

"Give me the boy!" I shouted. Conserving my more effective attacks, I fired a burst of bullets into the mound. Lightbulbs on the surface shattered into sprays of chipped glass; but the Lucifer itself was unhurt.

Quickly, I switched the gun back to flamethrower. "I'm counting to five. Give me the boy or I'll-"

Something shifted within the mound. My nerves were so jittery, I almost pulled the trigger… but I stopped myself on the minuscule chance the monster might be letting Sebastian go.

The heap closest to me bulged with a human-shaped protuberance: head and shoulders coated with gunpowder black, pushing their way out of the pile with a dry rasp. Crusted in midnight grains, a figure struggled to wrench free-pushing, pulling, until it abruptly tugged loose from its surroundings and stumbled forward, trying to catch its balance.

I kept my gun trained on the figure. "Don't come too close." If a thing that looked like Sebastian materialized out of that mess, I'd be a fool to believe it must be the real boy. Besides, the thing before me was still just a humanoid clump of black, standing weak and wobbly, head turning back and forth as if trying to get its bearings. Then the outermost layer of powder slumped away to reveal…

Rosalind Tzekich. As naked as when I had seen her last, but with life and health shining where there had only been the limpness of death.

The new Rosalind gave me a tranquil smile. Beatific. A much different look from the listless way she'd endured math classes. The distance and loneliness were gone now: she had the look of a prisoner who'd been released.

Reluctantly, I trained the Element gun on her-hoping that wherever the real Rosalind was now, she wore exactly the same kind of smile. "I've seen enough fakes of this girl," I said. "Let her rest in peace."

The Rosalind-thing didn't answer. She held her arms out at her sides, hands open, palms toward me: the pose of someone showing she was no threat, as if I were a dog who had to be mollified. "Stop it," I said. "You're nothing more than shapeshifting sand; a piece of Lucifer, trying to distract me. I want Sebastian and I want him now. One… two… three…"

She stepped toward me, still smiling. I cursed the Lucifer under my breath, and switched the gun back to bullets. What I had to do next would give me nightmares… as if my brain didn't already contain enough horrors for a thousand sleepless nights.

I pulled the trigger. A single bullet at point-blank range, straight into the chest of a teenage girl.

But it wasn't a girl at all. The shot hit the creature dead center, scattering gouts of black sand out the thing's spine; but a shock wave of blowback sent grains spraying forward, splashing onto my feet, my coat-and my face. I reached up blindly with the ‹BINK›-rod, hoping it would spirit the dark flecks away… but by then, my world had vanished.

No sight, no sound; but I could still breathe. The grains hadn't gone down my throat-not yet. I couldn't even feel them on my face. In fact, I felt nothing at all: as if my body had dissolved, leaving only a consciousness divorced from my five senses.

Then a sixth sense dawned: a feeling of connection and dispersion, my mind spread across the universe. A million, billion, trillion places at once. I had no eyes or ears, but I sensed myself standing on a plain covered with lacy blue ice, not frozen water but solidified nitrogen, oxygen, and methane; I was also floating through hot sulfur clouds where fat balloon creatures built cities from cottony fibers that drifted as light as dust; and I was deep undersea, clinging to the ocean floor as a warm soup of my own children clustered about me in the jelly stage of their life cycle. I lurked in the heart of trees. I swam through the bloodstream of an animal as big as the moon, and together we fed off dark energies filling the interstellar vacuum. I sipped on magma at a planet's core; I conversed with red moss in a tumbledown city peopled by senile machines; I clotted in a solid shell around a giant sun as it collapsed into supernova.