The lower crypts of the Sunken Spire smelled of scorched incense, stagnant canal water, and the pungent sulfur of alchemical brimstone.
Aurelia moved through the vaulted corridors like a wraith woven from black mist. Her boots made no sound against the flagstones, which were slick with warm condensation dripping from the vaulted ceilings. Overhead, the stone floor vibrated with the continuous, rhythmic rumble of Kaelen’s siege engines hammering the surface ramparts, drowning out the soft scrape of leather and mail as sixty veterans filed silently into the subterranean corridor behind her.
Around the bend of the central drainage cistern, the gloom gave way to a blinding, unnatural glare of golden light.
The chamber opened into an octagonal hall thirty yards across, its basalt pillars carved with weeping seraphim whose faces had been defaced by holy chisels. In the center of the hall, suspended over a drained baptismal pool, hovered a massive cage of gilded iron. Inside it burned a perpetual solar pyre—a sphere of roaring, incandescent holy fire fed by four brass conduits pumping pressurized naphtha from the upper vaults.
Around the pool knelt a dozen battle-priests of the Solar Concord, clad in heavy robes of crimson silk embroidered with golden eyes, their bald crowns anointed with ash. They chanted in unison, their voices rising and falling in a harsh, droning rhythm as they channeled the pyre's searing radiance down into an ancient stone sarcophagus set into the floor.
"They are trying to incinerate the resting place of the First Primarch," Aurelia whispered, her back pressed against the shadow of a colossal fluted pillar.
Beside her, Malakor rested the broad flat of his great sword against the stone floor. His amber eyes burned with an ominous, subterranean fury, reflecting the yellow glare of the holy fire. The sovereign heat within his blood hummed so violently that the cold stone beneath his boots began to steam.
"They will not touch his bones," Malakor growled, his voice dropping into that lethal, guttural register that signaled the end of diplomacy. "Take the fuel conduits. When the fire starves, I will sever their chorus."
Aurelia glanced back at Varek, giving a sharp, two-finger gesture.
The veterans moved with practiced, deadly efficiency. Twelve archers stepped into the shadows of the flanking colonnades, raising their short horn bows, their arrowheads dipped in thick grease to prevent any metallic rattle against the arrow-rests.
Aurelia slipped from the pillar, her twin curved blades drawn low at her thighs.
She crossed the open floor in three heartbeats, moving with the preternatural speed granted by the silver tether. Before the nearest battle-priest could finish his verse, her right blade opened his throat from behind in a clean, horizontal sweep.
As he collapsed, she vaulted over the brass fuel pipe, her left dagger plunging down into the lead-soldered valve, severing the pressurized naphtha feed. The yellow flame hissed violently, spattering black sludge as the fuel pressure dropped by half.
"Heresy!" the Lead Precentor screamed, spinning from the altar with his iron crozier raised high, holy golden fire flaring from the eagle-headed crest. "The shadows have breached the sanctuary! Cleanse them in the Light!"
He never swung the staff.
A volley of black-shafted arrows tore through the crimson silk of the chanting circle, dropping five priests in a spray of blood before they could stand.
Then came Malakor.
He did not dodge the holy fire that lashed out from the central pyre; he tore through it like a mountain gale.
His great sword swept in a terrifying, two-handed horizontal cleave that cut the Precentor and the heavy iron crozier in two in a single stroke. The sovereign fire within his blade met the solar radiance, not by repelling it, but by utterly consuming it. The golden runes on his dark steel flared to blinding, molten brilliance as he stepped into the center of the pool, carving his way through the remaining zealots with the ruthless, mechanical efficiency of an executioner clearing a scaffold.
Within ninety seconds, the chanting had ceased.
The only sounds remaining were the sputtering hiss of the severed fuel pipes, the drip of blood into the dry cistern, and the ragged, heavy breathing of the sovereign lord standing in the center of the carnage.
Malakor turned to Aurelia, the great sword dripping red gore onto the desecrated altar. His chest was heaving beneath his blackened armor, his dark curls plastered to his forehead with sweat and grease.
When his eyes found hers across the broken brass pipes, the sovereign gold in his irises burned with a fierce, intoxicating triumph that reached out and seized her soul through their bond.
He walked over the bodies of the fallen priests, stopping an inch from where she stood by the ruined fuel valve. Without a word, he reached out, caught the front of her leather tunic, and hauled her against him, crushing her mouth beneath his in a kiss that was pure, unfiltered conquest.
Aurelia gasped into his heat, her fingers tangling in the leather laces of his breastplate, her blood singing in delirious resonance with his sovereign fire. The raw power of the crypt—ancient, dark, and unchained—swirled around them like a rising tide.
Malakor broke the kiss with a ragged growl, his forehead resting against hers as his breath hot and ragged washed over her lips.
"The crypt is ours," he breathed, his gaze locked onto her mouth. "Now, we go to the roof and take the Inquisitor's crown."