The tunnel spiralled downward far longer than Jack expected.
Each step was steep and deliberate, the walls narrowing, then widening again unpredictably as though the passage wasn’t carved so much as grown. Roots pressed through the soil like veins, pulsing faintly with blue-white light — the same ghostly luminescence that marked the ash tree, the cavern arch, the symbols.
Eliza stayed close beside him, their hands intertwined. The air was cool here, thin, carrying the faint scent of damp earth and something sweet — like crushed heather.
“How far down does this go?” she whispered.
Jack steadied her as the tunnel dipped sharply. “I think… until we reach the heart of it.”
“The heart of what?”
Before Jack could answer, the tunnel levelled out and abruptly opened into a vast underground chamber.
They stopped.
A dome of tangled roots arched high above them, woven so tightly it looked like a living cathedral. In the centre of the chamber was a circular pool — perfectly still, perfectly black, reflecting no light.
A mirror of nothing.
Jack felt a chill crawl across his spine.
Eliza stepped forward cautiously. “What is this place?”
A voice answered — not the creature’s voice, not the whispering one from the hollow.
This voice was older. Deeper. Resonant.
“This is where the vow began.”
Jack spun, pulling Eliza behind him.
From the shadows at the far end of the chamber emerged two figures — not made of bark and light like the creature they’d encountered before, but human‑shaped silhouettes made of shimmering mist. Their forms flickered like unfinished memories, translucent but unmistakably familiar.
Jack’s breath caught.
“Eliza…”
His voice broke. “It’s them.”
Her hand slipped into his with trembling urgency. “Our parents.”
The two silhouettes drifted closer, their outlines shimmering as if held together by will alone. When they spoke, their voices blended — not separate, but united, like two echoes forming one note.
“We made the vow to protect the village… and protect you.”
Jack swallowed hard. “Protect us from what?”
The silhouettes wavered.
“From the Turning. From what awakes when the line breaks.”
Eliza stepped forward, tears burning in her eyes. “You didn’t tell us. You left us blind.”
“To tell you would have doomed you.”
The mist shifted, revealing more defined faces — younger versions of their parents, haunted by regret.
“The vow demanded silence.”
Jack clenched his fists. “Silence isn’t protection — it’s abandonment.”
The chamber trembled as if reacting to the emotion in his words.
The silhouettes steadied.
“We failed.”
Jack’s breath hitch. “Failed… how?”
The mist thickened around them, swirling into a brief image — his father and Eliza’s mother stepping into the glowing hollow all those years ago. Jack braced himself.
The memory darkened.
A third figure appeared behind them — a shadow, shapeless, emerging from the ground beneath the ash tree.
Eliza gasped. “What is that?”
The silhouettes flicked, voices weakening.
“The Hollowheart. The one who waits beneath the roots.
The one the Turning binds.
The one we could not hold.”
The chamber pulsed with an icy shock.
Jack felt Eliza grip his hand fiercely. “So the vow wasn’t just symbolic. You were trying to contain something.”
“Yes.”
Jack stepped forward, fury and fear mixing in his voice.
“And now that something is waking again?”
The silhouettes nodded — or the mist within them rippled, making it seem like they did.
“We were not enough. Our bond was duty, not choice.”
Eliza stiffened beside him.
Jack’s heart pounded.
The mist thickened again, forming a second vision — the ruined version of Heathsteady they saw in Chapter Seven.
Smoke. Broken houses.
Roots tearing through the earth like serpents.
A sky sickened green.
A hollow where the village square once lay.
“If the Turning fails once more,” the parents’ voices whispered, “this becomes permanent.”
Eliza stepped closer to the pool and the black surface rippled at her presence.
“So what do we have to do?”
The silhouettes dimmed, their edges beginning to unravel.
A final whisper emerged:
“You must face the Hollowheart together…
And decide the fate we could not.”
Jack reached toward the fading forms. “Wait—tell us how!”
But the silhouettes dissolved into drifting mist.
The chamber shook violently.
The roots overhead twisted, cracking open slightly — just enough for a deep, guttural sound to echo upward from somewhere even deeper below.
A sound like a heartbeat.
But wrong.
Slow, heavy, ancient.
Eliza took a step back. “Jack…”
He pulled her behind him, eyes fixed on the pool.
The black water was moving.
Something beneath it stirred.
A shape.
A shadow.
Growing larger.
Jack’s voice trembled as he spoke.
“Eliza… it’s waking.”
A long, thin crack split the surface of the water.
Then another.
Then the pool erupted in a blast of icy mist as something enormous began to rise from the depths.
Roots writhed. The chamber darkened.
And the Hollowheart opened its eyes.