Across the staging wharf, beneath the yellow halo of a stolen church lantern, Ren Vale and Sergeant Justin smoothed out three large sheets of heavy stone-built thick parchment across the flat lid of a salt barrel.
The documents were master building schematics. He was stamped with the private seal of Provost-Magistrate Malachai and the chief master builder of the Grand Synod.
Vane Vale leaned over Ren’s left shoulder. His monocle held was tight in his eye, his gold-trimmed pocket counting frame clicking with rapid, careful math. Old Father Garrow stood beside them, his blind face tilted toward the parchment as Ren traced the lines with his mammoth bone awl.
“The Aeterna Monstrance,” Ren murmured, studying the cross-sectional drafting.
The machine was terrifying in its scale.
It wasn’t a liturgical vessel held in a priest’s hands. It was a five-story stone-built engine of blackened boiler plate, polished brass, and sight quartz lenses, mounted directly into the soaring lantern dome of the Basilica of Dawn, eighty paces above the grand nave.
In the center of the engine sat the Harmonic Crucible. A ball-shaped cage of lead-shielded copper power-coil coils designed to house forty glass-like cores in a nested array. Copper channels ran from the crucible up into four massive, curved crystal mirrors suspended within the stained-glass lantern of the dome.
“Look at the energy conversion ratios,” Vane muttered. He pointed a kidskin finger at a column of exact glyphs along the margin. “The sound shaking of the glass-like marrow is converted into a magnetic deep ring field, then amplified through a high-pressure liquid silver-vapor star-fire chamber. At peak output, the Monstrance generates four point two million lumens of clear radiant energy.”
“What does that mean in tactical terms, Sergeant?” Ren asked, looking at Justin.
The young knight grimaced, his jaw set hard. “It means a sky-high siege weapon, scribe. The beam can be focused through the dome’s central prism and aimed anywhere within fifteen leagues of Oakhaven. At full power, it can burn up an entire iron-clad cavalry regiment in three seconds, or melt the walls of a border castle like beeswax. Malachai doesn’t just want to save the cathedral from bankruptcy. He wants to present the Grand Council in Fort Karst with an unbeatable weapon of total terror.”
“And when does he activate it?” Ren asked.
“Tonight,” Justin replied, pointing toward the upper vault. “At the Midnight Mass of Dawn. The Feast of the Solstice. The entire nobility of the northern provinces—two hundred lords, high court guards, and merchant factors—have gathered in the grand nave to witness the ‘Miracle of the Solar Promise.’”
“And what happens to the children?” Garrow’s gravelly voice asked from the shadows.
Ren looked down at the blueprint’s lower spreading pipe hub.
“The children are already gone from the water tank,” Ren said. “We freed thirty-two. But the blueprint shows that Malachai expected a supply interruption. Look at the backup chamber.”
Ren pointed the silver needle of his awl at a small, lead-lined compartment at the very focal point of the curved reflector: The Sovereign Core.
“He doesn’t need forty weak vessels if he has one high-purity Stage Three core,” Vane said. His voice dropped into a harsh whisper. “He wants Mira. If he captures her and mounts her quartz heart in that central socket, her sound deep ring will drive the entire machine without the need for the water tank.”
Ren tapped the ivory awl against the barrel lid with a soft, bone-shaking click.
“He won’t get her,” Ren said. “Look at the hum curve, Vane.”
Ren traced the ringing counts inscribed by the Synod’s master builders:
The Aeterna Crucible. Main Running Hum: a deep hum (Ringing Silver). Balance Hall: a deep hum - a deep hum. Critical Shear Threshold: a deep hum (Glass-like Sound Cleavage). total collapse: Deadly Ringing Detonation.
Vane’s eyes widened behind his monocle. A slow, hungry smile spread across his manicured face.
“A shear threshold,” Vane whispered. “The quartz lenses in the dome are cut along their natural crystal planes. They can withstand infinite deep ring at the concert pitch of pure silver. But if the hum shifts to the pitch of glass-like shear—the ringing octave of glass-like cleavage—the internal sound stress will exceed the pulling strength of the quartz.”
“The lenses will shatter,” Ren said. “Not from an iron hammer, but from their own song. The entire five-story Monstrance will collapse into the nave.”
“And how do you shift the hum, boy?” Vane asked, leaning in. “The controls are eighty feet above the altar, guarded by twenty Justiciar paladins and Malachai’s private guard.”
Ren stood up from the barrel, sliding his mammoth bone awl into his belt.
“We don’t climb the outside,” Ren said. “We go through the choir loft during the consecration. While Malachai raises his hands to receive the holy light, we rewrite the running charter.”
Ren leaned over the blueprint of the Aeterna Monstrance, his carved mammoth bone awl tracing the fine, detailed network of copper power-coil lines that fed into the central dome.
“Look at the hoisting gearwork,” Ren said. He pointed to a pair of massive balance weight winches anchored into the cathedral’s western cross-hall. “The Monstrance is suspended eighty feet above the altar on four steel mid-air cables. During the consecration, Malachai will engage the steam winches to lower the central crucible directly into the focal axis of the curved reflectors.”
“And the guards?” Vane asked, his Audit-Sight flaring faintly as he studied the defensive notations. “A machine of this value won’t be left unattended.”
“Twelve Justiciar Justiciars from the First Choir,” Sergeant Justin explained. He pointed to the half-round gallery overlooking the nave. “Full plate, heavy steel crossbows with explosive sulfur quarrels, and two flame-throwers charged with consecrated fire-oil. They’re stationed on the high narrow high walkways to prevent any surface disruption.”
“And the congregation below?” Ren asked.
“Two hundred of the wealthiest men in the northern provinces,” Justin said. “Barons, high court guards, guild-masters, and their families. They have come in velvet and ermine to witness the consecration. If panic breaks out in that nave, it will be a slaughterhouse.”
Brother Ren stepped to the edge of the barrel, his scarred head propped on his hand as he studied the thick parchment.
“The shear hum,” the monk murmured softly. “The pitch of glass-like shear. How will you produce that pitch, Ren? The children are down here. There’s no glass-like core in the dome.”
Ren reached inside his apron, past his tools. Then he drew out the Speculum of Forfeited Paths.
The gold-silver metal frame caught the lantern light, cold and grey.
“The mirror carries the deep ring of every future I burned, Brother,” Ren whispered. “When I bound you, the mirror absorbed the sound shock of the Hospitaller vows. If I channel that burned prayer through the silver metal ring of my awl into the central power-coil, the hum will spike directly into the shear hall.”
“A spirit backfeed,” Vane whispered, his eyes wide. “You aren’t just breaking the glass, Ren. You’re turning the church’s own sacred circuit against itself.”
The smell of old parchment, damp saltpetre, and cold river silt hung thick over the barrel as the four men studied the cathedral layout.
Ren traced the load-bearing support piers of the western crossing with the silver metal ring of his awl. “These columns were heavy with iron tie-rods during the earthquake forty years ago. If the ringing shaking travels down the power-coil cables, the stress will concentrate at the southern capital. That gives us our main escape route when the lenses shatter.”
“An escape route through seventy tons of collapsing granite,” Vane muttered, adjusting his monocle. “A breathtakingly dangerous exit strategy. But I suppose it possesses the virtue of finality if our counts are off by half a shaking.”
Sergeant Justin pulled a charcoal drafting stick from his belt, sketching the internal layout of the cathedral nave on the barrel lid beside Ren’s blueprint.
“The procession begins at the stroke of midnight,” Justin explained, tapping the drawing. “The Choir of Dawn enters from the western roofed porch, singing the Hymn of the Solar Promise. Malachai leads the bishops down the central aisle. It was flanked by eight Justiciar Knights carrying ritual axe-spears. The high narrow high walkways are manned by twelve arbalesters. But during the consecration anthem—when the pipe organ reaches full volume—the sound in the dome is ear-splitting. The guards won’t hear a door opening in the triforium gallery.”
“The triforium gallery,” Ren murmured, studying the cross-section. “That sits thirty paces above the altar, directly behind the Great Monstrance.”
“Exactly,” Justin said. “It was built for the boys’ choir during the First Epoch. But the stairs were unsafe thirty years ago when the timber rotted. If we use the old rope ladders from the bell tower, we can reach the back of the Monstrance without ever stepping onto the nave floor.”
“And the spreading pipe hub?” Vane asked, his counting frame clicking twice. “Where is the main thick parchment running charter located?”
“On the rear check hatch of the central crucible,” Justin said. “An eight-inch bronze plate bolted to the housing. It’s locked with a Void-court signet lock. But your ivory awl can pick the thick parchment matrix from behind without alerting the worker.”
Ren looked at the young sergeant. “And the Justiciars on the narrow high walkway, Justin? If they see you, they will call you a traitor.”
Justin looked down at his bare breastplate, where the silver sunburst had been scraped away into rough steel.
“My father died believing that his service bought his family peace, scribe,” Justin said, his voice hard as iron. “He died in the Ashen Hills with an empty purse and an un-mended roof. I’m not fighting for Malachai’s sun. I’m fighting for the children sleeping on those sacks.”