Chapter 18 Split
Sixteen wakes to cold.
Not the sharp, surgical cold of steel tables and fluorescent rooms, but something heavier—damp, invasive, crawling into his bones and settling there. The ground beneath him is uneven, slick with moisture, and when he tries to breathe, the air tastes wrong.
Too sweet.
Too dead.
He coughs, the sound ripping out of his chest painfully, and rolls onto his side as his lungs seize. Mud smears across his cheek, cold and thick. His body shakes uncontrollably, every nerve screaming as sensation floods back in uneven waves.
Pain follows.
Not the blinding, skull-splitting agony of overload—but the deep, bruised ache of something that has been used too hard and left to recover on its own.
Sixteen groans and curls in on himself, clutching his ribs as memory returns in jagged fragments.
The lab collapsing.
Eleven running.
The floor giving way.
Then—
Nothing.
He forces his eyes open.
The sky above him is wrong.
Not dark exactly—empty. A vast, lightless expanse stretches overhead, dotted with slow-drifting particles that glow faintly, like ash suspended in air that never quite settles. Tendrils of something organic hang from unseen heights, pulsing gently as if breathing.
The world hums.
Not the familiar internal hum—this one comes from everywhere at once, a low vibration that travels through the ground and into his bones. It resonates differently here, deeper and broader, like the space itself is alive and aware of him.
Sixteen's heart begins to race.
"No," he whispers hoarsely.
He pushes himself upright with shaking arms, fingers sinking into soft earth that squelches wetly beneath his palms. The ground is dark and fibrous, threaded with pale veins that pulse faintly when he touches them.
He yanks his hand back, breath hitching.
Upside Down.
The realization hits hard, a cold weight settling in his stomach.
But—
Not entirely.
He looks around slowly, vision adjusting.
The trees nearby are twisted versions of themselves—same shapes, same positions—but wrong in subtle ways. Their bark looks petrified, frozen mid-decay, and their branches sag under the weight of organic growths that pulse faintly in time with the world's hum.
Yet—
There's wind.
A faint breeze stirs the hanging tendrils, carrying with it the distant sound of… something else.
Water.
Real water.
Sixteen's brow furrows.
The Upside Down, as he's felt it before—through pressure, through breach—was silent. Stagnant. This place isn't.
He swallows hard.
Not fully there, he realizes. Not fully here.
A split.
The hum inside him reacts sluggishly, fractured but present. It resonates with the world around him in a way that makes his skin prickle, as if he's standing inside a field that doesn't quite know what to do with him.
He struggles to his feet, legs trembling violently. His clothes are torn and soaked through, lab gown shredded and hanging uselessly from his shoulders. Blood has dried stiff along his face and neck.
He looks down at himself distantly.
Alive, he thinks.
That feels like a miracle.
And a problem.
A sound echoes in the distance.
Not close.
But close enough.
Sixteen freezes.
It's not the wet, dragging noise of the creature from the lab. This sound is sharper. Quicker. Purposeful.
A hunt.
His pulse spikes.
Instinct kicks in before thought.
Hide.
He stumbles toward the nearest tree, pressing his back against its cold, fibrous surface as he forces himself to breathe slowly, carefully. The hum inside him flares faintly, reacting to his fear, but he clamps down hard, forcing it into stillness.
Don't pull, he tells himself. Don't push.
The sound passes—whatever it was moving on without noticing him.
Minutes stretch.
Then longer.
When he finally dares to move again, his legs nearly give out beneath him. He sinks down at the base of the tree, head bowed, shaking violently as delayed shock crashes over him.
Eleven, he thinks suddenly.
Panic flares sharp and immediate.
He focuses inward, reaching for the connection with everything he has left.
Nothing.
Not silence.
Distance.
The hum stutters weakly, unable to bridge the gap cleanly. He feels her presence like a fading echo—alive, moving, terrified—but far. Too far.
Tears sting his eyes.
"She made it," he whispers. "You made it."
The world answers with a low, distant rumble.
Sixteen startles, scrambling upright as the ground beneath him vibrates faintly. Somewhere far away, something enormous shifts, and the air thickens with pressure that makes his ears pop.
The Upside Down is awake.
And aware.
Sixteen swallows hard.
I can't stay here, he realizes.
But he also knows—deep in his bones—that whatever state he's in now, whatever boundary he's fallen through, he can't just leave the way Eleven did.
He looks down at his hands.
They tremble violently.
The hum inside him flickers weakly, damaged by overuse and backlash. Whatever he could do before—redirect, displace—it feels distant now, like a language he knows but can't quite speak anymore.
A cost.
He tries to stand again—and the world lurches.
Not physically.
Spatially.
The trees around him shift.
For a split second, they blur and double, their outlines misaligning as if two images are fighting for dominance.
Then—
They snap back.
But not quite the same.
Sixteen gasps, clutching his head as dizziness overwhelms him.
I'm phasing, he realizes dimly.
Not jumping.
Drifting.
The realization terrifies him more than the monsters ever could.
If he loses control here—
He forces himself to sit again, breathing hard, sweat chilling rapidly on his skin.
Slow, he thinks. Careful.
He closes his eyes and does the only thing he knows how to do anymore.
He listens.
Not to the hum.
To the world.
The vibration beneath him. The pressure in the air. The subtle alignment between himself and the space he occupies.
Gradually, painfully, the drifting eases.
When he opens his eyes again—
The sky has changed.
The particles are thinner now, fading like mist burned away by sunlight. The trees look less distorted, their shapes closer to what he remembers.
He looks up slowly.
Clouds.
Real clouds.
Gray and heavy, rolling across the sky.
A distant rumble of thunder echoes—not from the Upside Down, but from a storm somewhere far away.
Sixteen laughs weakly, half-sob, half-relief.
"I'm back," he whispers.
Not fully.
But close enough.
He staggers to his feet again, every movement an exercise in stubborn will. The forest around him feels more familiar now—still wrong, still heavy—but recognizably Hawkins woods.
He turns slowly, scanning the tree line.
Lights flicker in the distance.
Not alarms.
Streetlights.
Civilization.
Sixteen's breath catches.
I made it, he thinks. I actually—
A sudden wave of exhaustion slams into him without warning. His vision blurs, knees buckling as his body finally protests everything it's been through.
He stumbles forward blindly, crashing into the underbrush and barely catching himself before falling face-first into the mud again.
"Okay," he pants. "Okay—just—"
He doesn't finish the sentence.
Darkness creeps in at the edges of his vision, heavy and insistent.
The last thing he hears before consciousness slips away is the distant whine of sirens echoing through the night.
Hawkins.
He smiles faintly.
Then everything goes black.