The path the choir had anchored led them directly to the imposing slab at the dead center of the plaza.
As Marcus neared the tall structure, a sickly green light seeped from the dark cracks. It painted the brutalist Gothic ruins in a sharp, radioactive glow. Before he could touch the stone, the thick mist ahead started to swirl. It twisted into a tight, strange vortex.
From the heart of the vapor, a presence manifested.
It did not arrive the way the Scout had—no shriek, no phase glitch, no violence announcing itself before the fact. It was like a shape appearing in a dark room after your eyes adjusted. But here, the room changed, not Marcus's eyes. It was neither a physical body nor a beast born of shadow. A distorted figure appeared in the fog, towering over the Gothic columns. Its outline shimmered with broken starlight and shadowy fabric. It looked like a robed figure drawn with a signal that kept fading, shifting, and blurring. Marcus couldn't grasp its shape clearly.
The figure had a heavy, crushing density that weighed down on Marcus's lungs. Its features were blurred, blending into the air around it. Taryn and Lysara didn't draw their weapons. They stood still, breathless in the sudden silence that filled the plaza. They didn't have a name for this being. They also didn't know that this faceless, towering shadow was the legendary Keeper of Echoes.
The entity did not speak with a human tongue.
A heavy whisper spread from the silhouette. It didn't reach Marcus's ears at all. It arrived through bone. The sound hit his molars first. It was a deep, humming noise. It found the fillings he no longer had and shook his jaw, which he didn't really own anymore. It felt like his body remembered a pain his mind had forgotten. It crawled through his teeth and into his skull. The vibration felt heavy and textured, cold like the obsidian beneath his boots.
"Light binds."
The final riddle of Floor One dropped into the ruins with the finality of an execution sentence. As the whisper faded, the distorted shape vanished into the green mist. The gargantuan slab pulsed with a fresh, hungry energy, but the frequency remained. It stayed in Marcus's jaw for a while, a faint hum behind his teeth. It was like a bell that kept ringing in the wood of the pew, even after the sound faded.
Marcus didn't hesitate. His investigator mind processed the data using the local grid. It calculated the new command's variables. Light binds, he reasoned with flat certainty. The beacon was a fracture, but the altar was the knot. The sigil is the tool to tie the circuit.
Marcus shifted his stance to match the left-dominant design of his ship. He stepped forward and pressed his left palm flat against the center of the large slab.
He was sure that activating the rune was their key to ascension. It was the exact command needed to cycle the floor and open the way to the higher tiers. As the Shattering-sigil on his palm matched the stone's frequency, a scary truth began to sink in.
The energy didn't flow upward to part the way. Instead, the monolithic slab acted as a massive hydraulic vacuum. The blue light from his palm shot down into the plaza's foundation. It spread through the black obsidian floorboards, branching out like glowing, liquid roots.
Marcus suddenly realized something important. But before he could respond, a sharp heat clamped down on his wrist. The channel was straining to its limit. He wasn't activating an exit mechanism. Marcus felt a heavy weight in his chest as he fed the Spire's grand filtration cycle. The tower's endless hunger ate away at his conscience, consuming the souls of its captives. Each struggle turned into strong spiritual energy. He wrestled with what his role meant. Was he complicit in their suffering? The thought hit him hard. It was a constant reminder of the lives lost for this dark machine. Guilt wrapped around his heart, causing him deep turmoil, even in the fight for survival. He sought to justify his actions, yet each soul taken felt like a piece of his own humanity slipping away. This cycle fed not only the Spire but also his torment, and the burden of it weighed heavily on him.
The stone beneath them began to groan—a deep, tectonic protest of masonry deciding its layout.
A vertical tear split the solid obsidian wall behind the altar. It gradually morphed into a shimmering blue-violet tunnel of energy. This tunnel arched upward into the mysterious heights of the Spire. As the path opened, a faint crack echoed, resonating through the air. The moment felt charged, but someone had already paid the price with their marrow. The wall slammed shut, leaving an unsettling silence in its wake.
Taryn wiped the stone dust from her eyes. Her face brightened with frantic hope as she stared at the portal. "Marcus! You actually did it!" she gasped, shooting a worried glance at Lysara. "But... is it safe?" Lysara bit her lip, anxiety tightening her features. "We have to be careful. The path is open, but what dangers await us?"
Marcus pulled his burning palm away from the stone. His face was unreadable as he closed his fist, hiding the tremble of his fingers. He gazed at the shimmering rift. Then, he turned to the blank faces of the giant stone statues. They watched him from the shadows without making a sound. They had survived the first layer of the cage. Now, they stepped into the next tier of the circuit, blind.
"Lysara, lead the way," Marcus said, his flat detective voice empty of the dread anchoring in his chest. "Taryn, stay close."
They crossed the blue-violet rim. The obsidian wall shut behind them like a grave. The Shattered Threshold did not say goodbye.