The corridor seemed longer walking toward the firelit door than it had standing still.
Seraphina counted her steps out of habit, the way she used to count them on the walk to the village market as a child, a small anchor against the strangeness pressing in on every side.
She made it to forty before she stopped counting, because somewhere around thirty the candlelit sconces had begun repeating themselves — the same crack in the same stone, the same guttering flame, over and over, as though the corridor were folding back on itself to keep her walking a little longer than it should have taken.
She was fairly sure the castle was testing her patience.
She refused to let it see her flinch first.
At the black marble floor beneath her feet, her reflection kept its half-second delay, drifting along beside her like something not quite willing to be left behind.
She’d almost stopped noticing it—almost—until the reflection stopped walking entirely.
Seraphina’s steps faltered.
She was still moving.
Her reflection was not.
“That’s new,” she said, mostly to keep her voice from shaking.
The reflection in the floor stood motionless, staring up at her with her own face, her own eyes — except the eyes were wrong, black from lid to lid, no white left in them at all, like ink had been poured into the sockets and left to set.
Then it smiled.
Seraphina had not moved her mouth.
She stumbled back from the marble so fast she nearly fell, putting distance between herself and the floor as though the stone itself might reach up and grab her by the ankle.
Behind her, ahead of her, sconce-light flickered along the walls, and every reflective surface in the corridor — every polished stone, every gilt frame, every dark and glassy pane — seemed to hold its breath along with her.
“You’re not real,” she said, echoing what she’d told the trees on the road, though it had felt truer then.
“Whatever you are, you’re not—”
The reflection’s smile widened past what a human face could manage, black eyes never blinking, and it began, very slowly, to peel itself up from the floor.
It came away from the marble the way a shadow might climb up out of the ground if given permission — first the hands, fingers too long and jointed wrong, then the shoulders, the face still wearing Seraphina’s features stretched thin over something that was clearly not her at all.
Where its body should have had substance, it instead seemed to hold the same liquid darkness as the mirror’s glass, rippling faintly at the edges as though the thing hadn’t quite decided its own shape yet.
Seraphina backed away, pulse hammering.
“Stay back—”
“Why would I?” The voice that came from its throat was her own voice, warped and doubled, layered wrong the way the castle’s voice had been.
“You let me out. I only wanted to see what wearing you would feel like.”
It lunged.
Seraphina threw herself sideways, boots skidding on the too-polished floor, and felt the rush of cold air where the thing’s hand — too many joints, fingers ending in points like broken glass — passed through the space her shoulder had occupied a half-second before.
She hit the corridor wall hard enough to knock the breath from her lungs, and scrambled upright just as the creature turned, unhurried, to face her again.
It didn’t move like something hunting.
It moved like something that already knew it had won, simply enjoying the shape of the chase before it ended.
“Someone help me,” Seraphina said, low and urgent, not entirely sure who she was asking.
The castle?
Evelyne, still silent in her coat?
Some god she’d stopped believing in the day her mother vanished?
The mirror against her chest pulsed once, sudden and sharp, like a startled heartbeat.
“The frame,” Evelyne’s voice hissed, muffled through fabric, urgent in a way Seraphina hadn’t heard from her yet.
“Pull it out. Now, girl, unless you’d like to test how well that thing wears your face permanently.”
Seraphina didn’t waste breath asking questions.
She wrenched the small mirror free of her coat, the iron thorns of its frame biting cold against her palm, just as the creature lunged a second time.
She didn’t think.
She swung the mirror up between herself and the thing wearing her face, more instinct than plan, and the moment the creature’s clawed hand struck the glass instead of her body, something happened that she had no words for.
Light — not gold like the sconces, but a deep, pulsing red, the color of the mirror’s glass in the attic — flared outward from the point of contact, and the creature shrieked in her own stolen voice, recoiling as though the glass had burned it.
Its dark shape rippled violently, features sliding, the borrowed face of Seraphina Vale distorting into something formless and screaming before it collapsed back into the corridor floor, dragged down into the marble like water disappearing through a drain.
Then it was gone.
The floor was only floor again, and Seraphina’s own reflection stared back up at her, matching her movements at last, wide-eyed and shaking, exactly the way she felt.
For a long moment, the only sound in the corridor was her own ragged breathing.
“What,” she managed finally, staring at the small mirror still clutched in her white-knuckled hand, “in the name of every god you don’t believe in was that?”
“A shadow-thing,” Evelyne said, her voice steadier now, though not entirely.
“The castle’s walls are thin between this world and older, hungrier ones, and reflective surfaces are the thinnest places of all. They wear whatever face is nearest to hand. Given the chance, they’ll wear it forever.”
“You could have warned me it was going to try to kill me before I started walking down a hallway made of mirrors.”
“I could have,” Evelyne agreed, entirely unbothered.
“But you seemed so determined not to be told anything useful. I thought you might enjoy learning the hard way.”
Seraphina let out a breath that was half laugh, half something closer to a sob, and pressed the mirror briefly against her forehead, grounding herself in its cold.
“Remind me to be furious with you once I’m not about to fall over.”
“Noted. Add it to the list.”
Down the corridor, the firelit door remained exactly where it had been — closer now, though the walk toward it had felt endless.
Light spilled from the gap in warm, steady gold, utterly unlike the pulsing red that had chased the shadow-thing back into the stone.
Seraphina straightened, tucking the small mirror carefully back inside her coat, close against her heart where its cold could remind her, at least, that she wasn’t entirely alone in this place.
“How many more of those are there?” she asked, quieter now, eyeing every polished surface in the corridor with new and thorough suspicion.
“More than I could count for you honestly,” Evelyne admitted.
“But fewer, I think, the closer you get to him.”
“Him,” Seraphina repeated, and looked again toward the door at the corridor’s end, where firelight flickered like something patient, waiting to be let in on a secret it had been keeping for three hundred years.
She started walking again, boots careful now on the too-polished floor, one hand resting lightly against the shape of the mirror beneath her coat — and did not look at her own reflection again the entire rest of the way.