Sella kept her boot raised until her calf began to tremble.
The black-glass door lay beneath her shadow, though the shadow belonged to no light in the chamber. It stretched from her feet in the wrong direction, thin and sharp-edged, and ended at the center of the door. Beneath it, something knocked in time with her heart.
One.
Two.
Three.
“Put your foot down,” Brannoc said.
His voice was steady. His grip on her arm was not.
Sella lowered her boot beside the shadow instead. The moment her sole touched stone, the knocking stopped.
For half a breath, nothing moved.
Then the black-glass door knocked once by itself.
The sound traveled through the chamber’s floor and up Sella’s bones.
Tassa glanced at the four painted doors. “I preferred it when the dangerous things had the courtesy to stand upright.”
“Do not touch any door,” Sella said.
“I wasn’t going to.”
“You were thinking about it.”
“I think about many things. Most of them are very sensible.”
Iven crouched at the edge of the black glass. His throat-ring had tightened to a dark band beneath his jaw. He placed one hand over it and winced.
“What does it say?” Sella asked.
“It doesn’t say anything.”
The ring tightened again.
Iven’s mouth opened. His voice came out in two tones, his own beneath a thinner voice that did not belong to him.
“THE DOOR IS ALREADY OPEN.”
Iven slammed both hands over his mouth.
Tassa stared at him. “That was not reassuring.”
The black glass reflected them all: Sella, Brannoc, Tassa, Iven—and a fifth darkness standing where the chamber’s center ought to be.
Sella did not look directly at it. She watched the reflection instead.
The fifth darkness had no head. It rose behind her reflected shoulder like a person seen through deep water, its edges wavering whenever anyone breathed. One of its hands rested against the underside of the glass.
It knocked again.
Sella’s heart answered.
The shadow beneath her boot lengthened toward the door.
Next
The party must remain together while determining which of the four painted doors—or the black-glass door below—can be entered without allowing the fifth to isolate one of them.
No one argued. They retreated until the rope between them pulled taut. The binding still held four strands. She could feel Brannoc’s weight, Tassa’s restless fingers, Iven’s shaking sleeve. The fifth was absent from the rope.
Absent, but not gone.
Sella drew her knife and crouched beside the glass. The door had no hinge, handle, seam, or lock. Only a faint line circled its edge, visible when her shadow crossed it.
She held the knife above that line.
The fifth darkness in the reflection lifted its hand.
Sella froze.
It was copying her.
Not her body. Her intention.
The distinction mattered. The silent passage had preserved what they did. This door seemed to preserve what they were about to do, then offer it back before they could claim it.
Iven forced his hands away from his throat. “If you cut it, the door may read the cut as an entrance.”
“May?”
“I am working with incomplete evidence.”
“You always say that when the evidence is trying to kill us.”
“It is a useful phrase.”
Another knock sounded beneath the glass. Sella’s heart had not changed rhythm, but the door had. The fifth was no longer answering her pulse. It was beginning to lead it.
Her next beat came early.
So did the knock.
Sella’s chest tightened. She had spent thirteen floors treating every action as a possible trap, every word as a weight that might pull the world into a shape. But refusing to act had never made them safe. The dungeon had used hesitation before. It had used silence, memory, distance, and the places between one choice and the next.
A route existed whether she walked it or not.
She stood.
“I’m opening it,” she said.
Brannoc’s hand closed harder around her arm. “Sella.”
“I am not asking anyone else to do anything.”
“That is not how this works.”
“No,” she said. “That is how it has worked every time. It takes what we do together. It takes what we reject together. It takes the shape of us as a group and climbs inside. So this time, I give it one person.”
Tassa’s expression lost its humor. “You’re volunteering yourself as the doorstop?”
“As the choice.”
The rope tugged between them.
Sella took out the small iron hook she used for testing seams and knots. She laid it on the stone outside her shadow. Then she drew a circle around it with the point of her knife.
A deliberate action. A bounded one.
The chamber waited.
Nothing happened.
“Now what?” Brannoc asked.
Sella looked at the glass. “Now I do the thing I said I would do.”
She stepped onto her shadow.
The door opened.
It did not swing or slide. The black glass simply ceased to be beneath her. Sella dropped through a square of darkness no wider than her shoulders.
Brannoc caught her wrist.
The rope snapped tight behind him. Tassa seized his belt. Iven grabbed Tassa’s coat, and all four of them became a single line straining over the hole.
Below Sella was another chamber.
It looked exactly like the one above, but upside down. The four painted doors stood in the ceiling. The circular floor hung overhead, its center marked by the open black-glass doorway. Their shadows clung to that inverted floor like stains.
Sella’s own shadow remained above her.
It had not followed her through.
The fifth darkness had.
It stood in the upside-down chamber beneath her, no longer faceless. Its features were arranged from pieces she recognized: Brannoc’s stubborn brow, Tassa’s crooked smile, Iven’s impatient eyes, and her own mouth.
Not a person. Not any of them.
A suggestion assembled from belonging.
It looked up at her.
For the first time, it spoke aloud.
“Which one of you opened?”
The voice was all four voices at once.
Brannoc hauled Sella upward. She kicked against the air, finding no surface, while the thing below reached for her dangling boot. Its fingers stopped just short of touching her.
“None of us,” Sella said.
The words left her mouth and fell downward.
In the inverted chamber, they struck the ceiling like stones.
The fifth recoiled.
The black-glass opening narrowed around Sella’s shoulders. The door was trying to make her answer into a fact. If none of them had opened it, then perhaps no one had. If no one had, perhaps Sella had not entered. If she had not entered, the thing below could make her absence true.
Brannoc’s grip slipped.
Sella drove her knife into the edge of the opening.
The blade caught.
She looked down at the assembled face. Its mouth moved with hers.
“Together,” it said.
“No,” Sella answered.
She pulled herself toward the knife and away from the reaching hand.
“Not belonging.”
The phrase struck the lower chamber. The four painted doors in the ceiling flew open at once.
Behind them was not a memory, landscape, or passage. Behind each stood a version of the same chamber, extending downward forever. In every one, a fifth figure waited beneath a black-glass door.
The fifth below Sella turned toward those impossible repetitions.
For one instant, its attention left her.
Brannoc dragged her through the narrowing gap. Tassa caught the back of her harness and hauled with both hands. Sella’s knife tore free as she rolled onto the stone.
The black glass sealed.
The chamber above returned to its former shape. The four painted doors slammed shut. The shadow beneath Sella’s body folded itself back into place.
No one moved.
Then Iven began to laugh.
It was a short, breathless sound, edged with hysteria. “We opened it.”
Tassa smacked his arm. “You say that as though it is good.”
“We opened it and came back.”
“We were pulled back.”
“Details.”
Brannoc helped Sella stand. His hand remained around hers after she found her balance.
The black glass no longer knocked.
Instead, a thin line of writing appeared across its surface. Not on top of the glass. Under it, as though something below were holding letters up against the door.
FOUR MAY REFUSE.
The words faded.
A second line rose in their place.
ONE MAY ENTER.
Sella stared at the message. Her shadow had not crossed the door, but something had used her choice to open a way. They had escaped without closing it. Somewhere beneath the chamber, the fifth had learned a new distinction: not how to enter the binding, but how to separate one of them from the others.
The rope around their wrists tightened.
Not the fifth strand.
Their own.
Sella looked at the four painted doors, then at the black glass beneath her feet.
“We do not split up,” Brannoc said.
Sella nodded.
The black-glass door knocked once.
This time, the sound matched no heartbeat in the room.
It matched the footsteps of someone climbing toward them from below.