Hezekiah screamed in horror at Oonah's death. I wished I could find my voice to join him; but there was more pressing business, so I drew my rapier and headed for the door.

Kiripao beat me outside, of course… and before I reached the doorway, he dove back into the room, shouting, «Down!»

I had time to throw myself against the wall before a fireball burst at Kiripao's heels. A gout of flame poured in through the doorway, lighting our faces with hellish scarlet; but no one was in direct line with the blast, and a quick glance around showed only minor scorching.

Yasmin grimaced. «I take it the Fox has us bottled up.»

«Hey,» I shouted out to the old barmy, «Rivi said you couldn't burn us.»

«Oh, yeah,» he called back. «Sorry.»

The next second, a storm of white dust came through the doorway with the force of a hurricane. Wheezle, just getting to his feet, was blown backward by the wind and smashed against the wall a second time. Kiripao gagged on silt rammed down his throat, then curled into a ball, racked with coughing. The rest of us did some coughing of our own, then took cover under whatever desks and tables were available.

Looking through the transparent wall of the room, I saw the source of the new onslaught – Foxy had cranked up his dust grinder to full power and trained its punishing gush on the doorway. He didn't have a straight line of fire into the room, but it was good enough to get about half the grinder's output inside the door. Half was plenty. Already our exit was partly blocked by a mound of white, and the pressure of the spray was driving more dust inside. Within minutes, we'd all be neckdeep in that fine white silt; if we tried to escape in the meantime, we'd have to fight against the powerful jet of dust, then face the Fox's fireballs.

I looked across the room at Yasmin. Her cheeks and forehead had accumulated a layer of dust sticking to sweat. «We have to make a run for it,» she shouted. «I'll carry Wheezle. When we get out the door, we scatter.»

She had to know how desperate the plan was: no matter how fast we scattered, a single wide-diameter fireball could incinerate us all. On the other hand, did I want to stay in the control room and wait for it to fill with dust? Even if Foxy stopped the spray before we suffocated, we'd be trapped in grit until Rivi returned to rape our minds.

I nodded to Yasmin. «Let's do it.»

Kiripao exploded out of the doorway in a frenzied scattering of dust. Perhaps he intended to charge the Fox, because he took a step in that direction; but Kiripao was an elf, fine-boned and light. The continuing torrent of dust pouring from the grinder smashed him off balance, spun him around, and battered him back against the outside wall of the control room.

I didn't see any more than that… because I was next behind him.

The dust buffeted me with the force of an ocean wave, threatening to sweep me backward like Kiripao. I leaned into it, hoping my feet wouldn't slip on the silken mound of silt piled on the floor. My eyes were closed against the dust stream, but I could tell the moment I cleared the doorway by the sudden change of sound – the tightly enclosed control chamber opening into the wide and echoing machine room. Grappling for the edge of the door, I propelled myself forward, cutting directly across the brutal flood of dust.

My ear, the one facing toward the flow, filled immediately with the hammer-driven particles, clogging up so densely all sound from that direction was cut off. I wondered if this deafness just came from blockage, or if the pressure of the spray had ruptured my eardrum. For a moment, I panicked – loss of hearing or any other sense terrifies a Sensate. Fear spurred me on with desperate energy and I drove myself forward, harder, harder… until suddenly I escaped from the pounding barrage of dust, into the relative peace of the machine room.

Peace: deaf in one ear, and now assailed by sickening humid heat, as the broken boiler continued to spew steam into the air. I took a moment to wipe a clot of dust from my eyes, then ducked behind a screeching fan-belt and turned back to see how my comrades fared.

Kiripao had been beaten back into a corner of the room, unable to fight the unstoppable deluge of dust. As I watched, Yasmin joined him – she had been right behind me as I battled my way out the door, but had not been able to keep her balance with Wheezle in her arms. Woman and gnome had fallen together, and the cascade of silt had knocked them backward across the floor, both of them sputtering as the flood jammed dust up their nose. They struck Kiripao hard, all three pinned in the corner by the pummeling stream.

«Got you!» the Fox squealed in delight. His voice was barely audible over the hiss of fast-flowing grit. I saw him raise his hands, heard him begin the chanting invocation to shoot a fireball that would bake my friends.

«Stop!» I shouted, surging to my feet. But my voice was hoarse and I could never fight my way upstream against the dust spray in time to reach the Fox. Roaring, I threw myself into the storm anyway, hoping the old barmy might aim at me instead of Yasmin.

Dust slashed deafeningly around me. When the fireball went off, I wouldn't see or hear it; I would only feel the passing of its heat, either striking me down or exploding around my three allies still pressed back into the corner. Exploding around Yasmin.

Then, suddenly, the dust cut off like a blown-out candle. I had been leaning so heavily into it, I staggered and fell face down, landing on clotted dust as soft as a pillow. Immediately I lifted my head and saw the Fox a few paces away, his eyes closed in bliss, his lips still chanting the spell. Hezekiah stood beside him, the Clueless boy holding the grinder in his hands. He had cranked its output down to a fraction of the former flood… and he had aimed the resulting spray to sift lightly down over the Fox, coating him with the purest white.

I opened my mouth, then closed it again. Let fate take its course.

The Fox still wore a foundation layer of the brown dust, counteracting the anti-magic influence of the white. However, as the new shower of white dust rained over the brown, the balance of energies began to shift. Did the Fox notice? To my eyes, the effect was subtle at first: a gentle glow, a soft nimbus surrounding the old man as the white dust began to fluoresce. Miriam had told us the sorcerer was at home with fire – maybe he didn't feel the initial heat. But as the peak of the conjuration approached, I could almost feel magical energy ballooning around the Fox… and the white dust could feel it too.

With a soft puff, every dust particle blossomed with the heat of a tiny sun.

Hezekiah threw himself backward; or perhaps he was knocked away by the heat of a million dust motes blazing like molten steel. The Fox's voice choked in his throat, and his mad old eyes opened wide. White-hot flames sizzled around him; his face transformed to an expression of wonderment.

Embracing the ultimate fire.

Then the energies around him shredded his body to powder, and he exploded like the giant on the Mortuary steps.

The force of the Fox's explosion blew out the closest three pistons, blasting them into pieces of metal shrapnel that sliced through other parts of the massive engine. Immediately, the floor beneath me lurched like a wagon upturned on a stone in the roadway; and I wondered what the Glass Spider would do with one of its drive-legs put into the dead-book.

I didn't intend to stay around and find out.

Time for the eternal chorus of anyone venturing onto the planes, more universal than any prayer or chant or battle-cry; and all of us yelled it in unison.