Sera made Eli tie the first knot twice.
“It’s secure,” he said.
“It is now.” She tugged the rope where it looped around the training gate’s entrance rail. “The first knot would have tightened so hard we couldn’t untie it without cutting.”
Kellan set a canvas bag on the floor. “Cutting is an option.”
“Not with my rope,” Sera said.
“It belongs to me.”
“Then you can cut it.”
The residual gate occupied a former storage hall at the edge of the assessment grounds. A registry officer had checked their permits, loaned them two sealed mana markers and opened a log for their practice. No creature had been reported inside since the gate was stabilized. The notice still required visitors to stay within the surveyed section and return the markers before closing.
Beyond the shimmering entrance was a stone passage lit by fixed lamps. White paint marked the approved route. The floor looked like rough concrete, though a closer look showed thin veins of mineral running through it. A low hum came from the wall near the gate.
Eli had entered dozens of more dangerous places, but the ordered stillness unsettled him. There was no urgent patient, no leader rushing them onward, no sound to drown out a mistake. He could see Sera examining each lamp and Kellan checking the floor where the rope might catch.
Sera placed three numbered tags along the first section: one at the entrance rail, one at the bend, one beside a narrow recess. She had brought them herself, cut from stiff yellow card. Each had a hole punched through it for a cord.
“Fixed points,” she said. “If I tell you we’re at the bend and the tag says we’re at the recess, believe the tag.”
“Comforting,” Eli said.
“It’s training. If I could already do it perfectly, I’d be charging more.”
Kellan carried one marker to the end of the approved corridor while Sera stayed at the entrance with her back turned. Eli followed Kellan to see where he placed it. The marker was a glass cylinder fitted inside a protective case. Kellan put it on a shelf behind a broken slab, then returned by the painted line.
“Ready,” he called.
Sera waited until Kellan stood beside her. She closed her eyes, tilted her head and raised one hand. Her fingers spread slowly, as though she were measuring the distance between two invisible surfaces.
“It’s ahead,” she said. “Slightly right. Not moving.”
She walked along the rope at a careful pace. At the bend, the corridor split into two shallow branches, both within the surveyed area. One curved right; the other went left around a wall and rejoined it farther on. Sera paused at the division.
“The current presses harder on this side.” She pointed right. “The wall bends it. The source itself is farther in.”
Eli followed her. The marker was still hidden behind the slab. Sera stopped two steps before reaching it and pointed to the shelf.
“There.”
Kellan took out the cylinder. Sera opened her eyes and watched him hold it up.
“How close?” she asked.
“You found it.”
“I know. Did I stop before it or walk past it?”
“Two steps before.”
She nodded and wrote that on a card. “Again.”
They changed the location. This time Kellan put the marker in the left branch, beneath an overturned crate. Sera identified the branch but searched the wall before finding the floor. Her estimate was three feet too high. She wrote that down too.
“Can you feel the shape of the object?” Eli asked.
“Not reliably. The case spreads the current. I feel direction, strength, movement if it’s moving. Sometimes a current catches on something and I mistake the catch for the source.”
“What does it feel like?”
She considered. “If you walk into a room with a fan running, you feel the air before you see the fan. Now imagine the room has walls you can’t see and somebody moves the fan.”
Kellan set the marker on the floor and shifted it a few inches with his boot. “Like that?”
“Slower. I can feel it moving, but I can’t tell from this distance whether you moved the source or opened a path for the current.”
Eli found the distinction useful. A moving signal might mean a creature approaching, or a door opening between the scout and a stationary source. He had treated Sera’s limitation as a flaw when it was also information about what the team needed to check.
“Let’s make it harder,” he said.
Sera looked at the second marker. “Two sources?”
“Both active. You find them.”
“Keep the rope and tags.”
“Of course.”
Kellan carried both markers away. He set one behind the shelf where they had started, then placed the second inside the crate in the left branch. The cases had adjustable settings. He turned the first down and the second up, then returned along the rope.
Sera entered with Eli behind her. Kellan remained near the first tag, timing them. She moved confidently to the bend, then stopped. Her fingers curled.
“Two,” she said. “One is stronger. The weaker one is somewhere beyond it.”
“Which branch?” Eli asked.
“I need a moment.”
She walked toward the right branch. At the wall she turned, looking back toward the entrance. The rope lay along the floor, bright against the gray stone. A lamp flickered overhead.
“The stronger current moved,” she said.
Kellan hadn’t touched either marker. Eli knew that, but Sera did not. She had asked to be evaluated fairly, and telling her the answer would turn the test into something else. He watched her read the passage.
“Behind us,” she said. “Something is coming in from the left.”
She moved quickly toward the right branch and beckoned Eli after her. The rope led left around the wall to the last numbered tag. Eli followed two paces, then stopped.
“We’re leaving the line.”
“The current shifted. We need to clear the junction.”
“What can you see?”
“Nothing. That’s why I’m telling you what I feel.”
Her voice was tight. For an instant Eli wondered whether Kellan had changed the exercise without telling him. He listened. There was no footfall, only the low hum and the faint creak of rope against stone.
“The tag is back there,” he said. “We agreed to return to it if the reading and the route disagree.”
“If something is coming, going back puts us in its path.”
“And going this way takes us away from the fixed line.”
Sera took another step, then stopped. Her face had gone red. “You’re telling me I’m wrong because you know where the markers are.”
“I’m telling you the rope goes the other way.”
She stared at him. “You do know where they are.”
“Yes. I shouldn’t pretend I don’t. But we set the markers so we could stop here without guessing.”
The lamp flickered again. Sera glanced toward the shadowed branch, then followed Eli back to the tag. Kellan met them there. He had one hand on the rope and a watch in the other.
“What happened?” he asked.
“I felt the stronger source move behind us,” Sera said. “It didn’t, did it?”
“No. Both stayed where I put them.”
She looked away. “I ordered him into the wrong branch.”
“You thought you were moving us away from an approaching source,” Eli said.
“I was wrong. Don’t make it sound like I found a clever route.”
“I wasn’t trying to.”
Kellan went to retrieve the markers. While he was gone, Sera sat on the floor beside the tag and pressed her palms against her knees. Eli remained standing until she gestured toward the opposite wall.
“You can sit. I’m not going to disappear.”
He sat. The rope lay between them.
“Did you feel embarrassed?” he asked.
“No. I enjoy being wrong in front of people who might hire me.”
“Fair.”
She rested her head against the wall. “It was like the stronger current swallowed the weaker one. Then the combined pressure shifted, and I couldn’t tell whether that meant movement or a change in how the currents met.”
Sera rubbed the heel of her hand against one eye. “My last team used to send me ahead in tunnels. The leader liked it when I gave an answer quickly. Once I said a branch was clear because I couldn’t feel the second source. A porter went in and came back with half his pack torn off.”
“Was he hurt?”
“His shoulder. He recovered.” She picked up a pebble and rolled it between her fingers. “The leader told me I should have tried harder. Then he asked for another quick answer. I left after the job.”
Eli looked down the rope toward the entrance. “Did the porter blame you?”
“He asked me to tell him when I wasn’t sure next time. The leader said there wouldn’t be a next time for him on that team.” She set the pebble on the numbered tag. “I should have said I couldn’t separate the signals. I didn’t want to be the slow one.”
“Have you trained with two before?”
“Not with markers I could control. At the registry they let me sense a room full of active objects and asked how many there were. I said three. There were five.”
“Did they explain the difference afterward?”
“They said my rank was D.”
Kellan returned carrying both cases. He placed them on the floor where Sera could see them and pointed out the settings. She asked him to put the stronger one back while she stayed at the tag. He did, and she closed her eyes again.
“Now move it a little.”
He moved it. She described the change. Then he replaced the weaker marker and moved neither. The pressure blended again; this time she knew what was happening but still could not isolate the two sources.
“I need measured distances,” she said. “One marker fixed, one moving along a line. Change only one thing each time.”
Kellan picked up her notebook. “I can mark positions on the floor. The training desk may let us borrow chalk.”
“You’d do that?”
“If we agree on the time.”
Sera looked at Eli. “I won’t lead a live rescue through overlapping signals until I can separate them. If you need someone to promise that now, find another scout.”
“I don’t.” He pointed to the rope. “I need someone who will stop at the marker when a reading doesn’t make sense.”
“I argued first.”
“So did I. Next time we both stop sooner.”
She accepted that with a small nod, not quite a smile. Kellan collected the tags. Eli wound the rope carefully, checking each turn for grit. When they reached the entrance, the registry officer compared the marker numbers with the log and inspected the cases for damage.
“One of the lamps flickers at the split,” Sera told him.
“We’ll note it.”
“Will someone replace it before the next group?”
“I’ll report it.”
She waited while he wrote. The officer looked up. “You can see the entry if you want.”
She did. He turned the log so she could read the line, and she thanked him.
Outside, the afternoon was bright after the steady lamps. A training party was gathering near the next gate, arguing over who had left a helmet on the bus. Kellan returned the rope to his bag. Sera opened her notebook on a bench and drew two circles with arrows between them.
“Here’s what I want to try,” she said. “Fixed point here. Second marker every two feet. We record what I say before telling me its actual position.”
“Blind trials,” Eli said.
“Yes. And a control with only one active marker, so I don’t start claiming two every time.”
Kellan leaned over her shoulder. “We can vary the wall between them after the distance test.”
“Not on the first day. I want to know which change caused the result.”
“Agreed.”
Eli looked at the plan. The first exercise had given them a scout who could follow a single current. The second had shown exactly where her confidence could outrun her information. She had not hidden the failure, and she was already building a way to learn from it.
“Come back to the clinic tomorrow,” he said. “We’ll plan a route with the markers and see how your readings fit with Kellan’s structural checks.”
“Who decides whether I pass?”
“All three of us discuss it. You’re there for the whole discussion.”
“And if I say the route is dangerous?”
“We stop and look at why.”
Sera closed the notebook. “Put that in the plan.”
Kellan offered her the pencil. She opened the notebook again and wrote a line beneath the circles: ANYONE MAY CALL A PAUSE. Under it she left room for what a pause would mean. Eli had promised to stop; they still needed to decide how the team would choose what happened after stopping.
They walked back toward the station together. At the platform, Sera chose the opposite direction. She raised two fingers in farewell, then stepped onto her tram. Eli and Kellan waited for theirs with the rope bag between them.
“You were ready to follow her,” Kellan said.
“For a second.”
“What stopped you?”
“The rope.”
“Good thing she made you tie it again.”
The tram arrived. Eli picked up the bag, feeling the weight of the rope inside. In a real emergency, Sera’s warning might have been right and a pause might have cost them time. The trial had not made their next decision easy. It had given them a way to face it together.