Dain’s first step was not an attack.
He moved toward Elian, keeping his shoulders square to Iven and his back close to the wall. The guard at the stair advanced at the same pace. Elian had perhaps six paces of open span between them and no safe way past either man.
Iven stepped into that space. “You don’t have to do this.”
“I agree,” Dain said. “Give me the notebook.”
Elian’s hand tightened over his coat. “No.”
The commander raised his left hand. A shield formed in front of him, not a single flat wall but two overlapping surfaces braced against his forearm and the anchor ring at his side. Iven could see the faint distortion where the force met the metal. Dain had chosen his position before he brought the shield up.
Iven set a plate brace across his own chest and left side. The narrow span gave him little room to circle. If he pushed straight into Dain’s shield, the anchor ring would take the load. If he moved toward the rail, the guard at the stair could reach Elian.
“Back to the window,” Iven told Elian.
Neri held it open. Sera stood behind her with Brin. The survey clerk had retreated into the corridor, taking his papers but leaving the chairs where they stood.
Elian took one step toward the window. The guard at the stair moved to intercept. Iven sent a short bell pulse into the railing beside the guard. The metal rang hard enough to make the man cover his ear and stop. Elian reached the window.
Iven could feel the stored charge in the graft as a pressure rather than a number. He had rested since the lift repair and eaten breakfast; he was not close to empty. That made the commander’s position more irritating. Having strength available did not give him a better angle through the wall or room to throw Dain past the railing.
He shifted his left shoulder. The plate brace moved with him, covering his ribs while leaving the right hand free. Dain noticed that too. The commander had not rushed the exchange, and Iven suspected he was learning from each adjustment.
Inside, the clerk called that the notebook belonged to the office. Brin replied that Elian had paid for it himself. The clerk said the paper was not the point. Brin asked what the point was, and for a brief moment nobody answered him.
A bell rang somewhere beyond the office. It marked the change of shift, not the end of the argument on the span. More footsteps sounded below as workers came out to see what had happened.
Dain advanced. His shield slid along the wall without losing its connection to the ring. Iven met it with the plate brace and felt the force press through his left forearm. He could hold for a moment, but Dain was stronger and had a better anchor.
Iven pushed off with spring step. The impulse carried him sideways, not over the rail but toward the commander’s unshielded right. He aimed a piston strike at the edge of Dain’s guard, hoping to turn the shield rather than break it.
Dain let the first surface pivot. The second remained fixed. Iven’s strike hit at an angle and slid away. The commander answered with a compact shove that drove Iven back toward the window.
Neri caught Elian by the collar and pulled him through. “Inside.”
Elian resisted. “Iven—”
“Inside.”
He went. Sera moved Brin farther from the opening. Iven could hear their feet in the survey room, the scrape of a chair, the clerk calling for someone to protect the records.
Dain did not pursue Elian immediately. He waited for Iven to regain his footing.
“Your spring puts you to your right,” he said.
“Usually.”
“You favor the wall when you jump.”
“It’s a good wall.”
“It has a railing on the other side. You don’t want to risk the people below.”
Iven glanced down. The cart had moved, but two pedestrians stood in the walkway watching. One held a basket over her head as if it could protect her from falling masonry. She was right to be concerned.
“I’d rather not,” he said.
Dain adjusted his shield. “Neither would I.”
The commander stepped forward again. Iven released the bell channel and reseated winch draw, using his free hand against the inside of his coat as he had practiced. Three seconds. Dain closed half the distance during the first two.
Iven anchored the winch pattern to the ring behind Dain and pulled. If the line caught the shield’s edge, it might turn the commander away from the window. If it caught Dain himself, it could draw him against the wall long enough for Elian to escape through the room.
The pull took hold. Dain shifted with it, using the force to bring his shield across the span. Iven felt the mistake immediately. He had given the commander a direction and an anchor he could use.
The shield struck Iven’s brace. The two forces held for an instant. Then Dain lowered his shoulder and drove forward.
Iven’s boots slid. He released the winch pull before it could drag him into the wall, planted one foot, and used a short piston impulse against the railing post. The post shuddered. The reaction pushed him clear of the shield and back toward the center of the span.
The guard at the stair came forward with a baton. Iven sent the plate brace toward him, not as a blow but as a barrier between him and the window. The guard struck it once and stopped when the force pushed him back.
“Stay there,” Iven said.
The guard looked at Dain. Dain gave a slight shake of his head. The man stepped back.
From inside the room came the sound of breaking glass. Iven turned. A second guard had entered through the corridor and was trying to take the notebook from Elian. Neri stood between them with a chair held across her body. Sera was moving Brin toward the door to the physician’s room.
“Leave him alone,” Neri said.
The guard caught the chair. Neri let it go and pushed the table into his knees. He stumbled, knocking the clerk’s papers into the air.
Iven moved toward the window. Dain’s shield intercepted him. It did not strike; it occupied the space, anchored to the wall and angled so that Iven would have to go around it or over the rail.
“Your people are fighting mine,” Iven said.
“They were ordered to secure the notebook.”
“And if they push him through the furnace?”
“They won’t.”
“You can’t see them.”
Dain glanced toward the room. It was a small opening, but Iven used it. He seated bearing glide in place of the bell, pushed from the span, and slid along the narrow strip between shield and railing. The movement carried him past the commander’s first surface before Dain could turn it fully.
Iven caught the window frame and swung inside. His boots hit scattered papers. The guard had seized Elian’s coat. Iven grabbed the man’s wrist, twisted it away, and sent a controlled piston push into his shoulder. The guard fell against the table without striking his head.
“Go,” Iven told Elian.
“Where?”
“The physician’s room.”
Sera held that door open. Beyond it lay a short corridor leading toward the lower stair. Brin had already gone through. Neri pushed the fallen chair aside and followed Elian.
Dain entered through the window behind Iven. He did not rush. The shield came with him, compressed to fit the opening and expanding again once he reached the room. The furnace cast a dull red light over its edge.
“You’ve made this more dangerous,” Dain said.
“I’ve made it slower.”
“That’s not always the same thing.”
He was right. Iven disliked that. He picked up a loose chair leg from the floor and held it in his right hand, keeping the spanner where it was. His bruised wrist had improved but still objected to sudden pressure.
Dain moved around the table. Iven retreated toward the physician’s door, keeping the chair leg between them. He had plate, piston, and glide seated. The winch pattern was in his library, available if he could spare the time to reseat it.
Dain’s shield struck the chair leg. The wood splintered. Iven dropped it and used a piston strike against the floor, shifting backward through the doorway. He closed the door between them, then heard the latch catch.
A second later the door opened again. Dain had not smashed it. He had lifted the latch.
“Worth trying,” Iven said.
“Was it?”
Neri was halfway down the short corridor with Elian. Brin had reached the lower stair. Sera stayed beside Elian, one hand on his arm.
“There are people on the stair,” she called. “We can’t run through them.”
Iven looked back at Dain. The corridor was narrower than the span. There were anchor rings here too, set into the wall beside the furnace pipes. Dain’s shield could fill most of the passage.
A woman carrying a bundle of survey sheets appeared at the far end. She stopped when she saw the group.
“Go back,” Neri told her.
The woman hesitated. Dain lowered his shield a fraction. “Let her pass.”
Iven stepped against the wall. The woman hurried between them, clutching the sheets to her chest. She went through the physician’s room and shut the door behind her.
“That was kind,” Iven said.
“That was necessary.”
Dain advanced. Iven planted his left foot and used spring step to rise toward the wall, intending to clear the shield’s top edge. He had to give up the glide channel to seat the spring, and the change took him a fraction longer than he wanted. Dain saw the movement.
The commander’s shield shifted upward. At the same time, a narrow force line caught Iven’s right ankle and drew it toward the nearest anchor ring. Iven’s spring impulse had already begun. His body rose, but his foot did not follow the intended path.
He struck the wall shoulder first. The plate brace absorbed much of the impact, but his breath went out of him. Dain tightened the line and pinned Iven’s ankle against the ring. A second pressure held his left forearm away from his body, preventing him from reseating another pattern quickly.
It was not a nullification. The graft still responded. The problem was position: Iven had launched against an anchor Dain had prepared, and the line held the part of him he needed to land safely.
He sent a piston strike into the floor. The impulse lifted him enough to twist, but Dain’s shield followed and pressed him back against the wall. Iven could feel the commander’s control, steady and deliberate, not a wild attempt to crush him.
“Yield,” Dain said.
Iven tested the ankle line. It held. He could continue striking at the shield, but the corridor was crowded and the anchor sat beside a hot pipe. A missed blow might break the pipe or hit the people on the stair.
Neri had stopped beside Elian. She saw the position and looked for a way around Dain. He kept the shield angled toward her without taking his attention off Iven.
“I can get free,” Iven said.
“You might.”
“I’m going to remember this.”
“That’s generally how learning works.”
A sudden cry came from the stair. Elian had been pushed against the railing by the guard who had come around from the span. The rail’s upper joint had loosened; it bent outward under his weight. Neri caught his sleeve, but the guard’s baton knocked her hand away.
Iven stopped testing the ankle line. Elian’s notebook was still beneath his coat. The surveyor had one arm around the rail and the other reaching for Neri. Below them, the stairwell opened over the lower walkway.
Dain turned his head toward the cry. His shield remained on Iven, but the anchor line slackened a fraction.
Iven saw the mistake he had made and the opening the commander had just given him. He drew a breath, not to surrender but to decide what mattered in the next second.