The cold embers in the pit didn't give off a single trace of heat, yet Finn kept staring down into them, his wooden stick stirring small, gray clouds of ash.
"A lock," Daniel repeated.
The words felt heavy in his mouth, thick with the sulfur that seemed to cling to everything in these depths. He didn't drop his stance. "The academy doesn't build locks out of men, Finn. They build outposts. They build borders."
"They build lies," Finn corrected, his tone as flat and unyielding as the iron bridge they had just left behind. "They told you the Ashen Mountains were an infected territory. A scar on the map where the undead crawl out from the dark, needing to be culled by brave little soldiers holding bright silver badges."
He tossed the stick into the center of the cold stones. It hit with a dry, hollow snap.
"They never told you what was under the ash," Finn continued. "They never told you why the ground bleeds black fluid, or why the metal in your hands is currently trying to root itself into your nervous system."
Lily took a cautious step around the edge of the campsite, her boots barely making a sound against the smooth cave floor. Her eyes were fixed on the drying racks, on the strange, elongated cuts of meat that looked altogether too tough, too dark, to belong to anything that walked under the sun.
"What is under the ash, Finn?" she asked quietly.
Finn let out a long, slow breath. The pale blue light from the cavern ceiling caught the faint gray lines stretching up his neck, disappearing beneath his hairline.
"An old heart," he said. "A very old, very heavy heart that refuses to stop beating. The academy didn't build the gates to keep the dark out, girl. They built the gates to anchor it. Every badge pinned to a student's cloak is a tiny copper pin holding down a massive, writhing curtain."
He lifted his right arm. The skin from his wrist to his elbow was cracked open, revealing not muscle or bone, but seamless, pale iron that pulsed with a slow, sickly white rhythm.
"When you cast off the silver," Finn said, "you didn't free yourselves. You just took out the pins. And now the mountain is using your own steel to stitch the curtain back together."
Daniel looked down at his own hand.
The dark capillaries on his knuckles had grown thicker, raised against his skin like tiny iron wires. When he flexed his fingers, there was no pain—only a strange, metallic tightness, as if his joints were being greased with cold oil.
"Vance tried to pull the curtain down," Daniel said, piecing together the broken entries of the bloody journal in his pack. "That's why his unit died."
"Vance was an idiot who thought he could use the academy's own tools to burn the root," Finn replied, his white eyes drifting back up to meet Daniel's. "He thought if he brought enough gold-trimmed commanders up here, he could force the mountain into submission. The mountain ate his men, used their bones for fuel, and left Vance sitting on a pile of his own vanity until his brain turned to sludge."
Finn stood up slowly.
He didn't draw a weapon, but the pressure in the air spiked instantly. The pale blue fungi on the ceiling flickered, dimming until the cavern was cast in a deep, suffocating twilight.
"Bill didn't send you to rescue me," Finn said, taking a single step toward Daniel. "And he didn't send you to kill me. He sent you because the anchor on this side was weakening. He needed fresh iron. He needed fresh blood soft with vervain."
"Then why tell us to look for you?" Lily asked, her blade flashing upward, its black-veined edge catching the dying blue light. "Why give us your name?"
"Because a name is a trail," Finn said softly. "You don't hunt a monster in the dark without a scent to follow. I was the scent."
The ground beneath them shuddered.
Not a violent quake, but that same deep, rhythmic breath they had felt in the throne room—only closer now. Stronger.
From the far end of the natural cavern, beyond the small, human campsite, a low, pulsing hum began to resonate through the walls. A passageway opened in the rock face, revealed as the dark stone pulled back like folding skin.
Inside the passage, there was no light at all. Just an absolute, crushing void that seemed to pull the cold air straight out of their lungs.
Finn pointed toward the new opening with his bare, iron-fused hand.
"That's where the thread ends," Finn said, his voice dropping into a whisper that felt cold against Daniel's ear. "The real heart of the peak. You can turn around and try to climb back down the chasm, let the molten constructs tear you apart while you try to find a way home... or you can step through."
"What's in there?" Daniel asked, his hand tightening so hard on his hilt that the iron veins in his skin throbbed in response.
Finn looked at him, his white, featureless eyes reflecting nothing.
"The rest of the tally."