Mara told Ines about the crossing while the mechanic scraped cold toast into the stove. She included the way Tomas’s knee had folded, and his question about whether she had seen him reach the middle. Saying it in a room with tools on the walls made her want to go back and try again.

Then she described Orrin’s demand for an attached carbon and Tomas’s refusal to sign. Ines stopped scraping.

“And the other part of this?” She tapped the fragment.

“He didn’t say.”

“Ask Sayer at twelve. Retired ferry inspector. He brought me a ticket punch to mend last winter. Asked whether I could preserve the number while replacing everything holding it together.”

“Could you?”

“Yes. He complained about the price with considerable accuracy.”

Mara returned receipt fragment 6418 to her satchel’s buttoned compartment. Her route book and the unsigned delivery set were still with her. Ines had a lift cage waiting on trestles and would lose the afternoon’s wages if she left it.

“Bring me the answer,” she said. “Even if you dislike it.”

At twelve Wren Passage, an elderly man was washing the milk bottles in a basin balanced on his windowsill. He wore sleeve protectors over a cardigan. Mara introduced herself.

“Vale,” he said. “Your brother went to the survey landing. Always asked for the passenger side, away from the livestock.”

“That sounds like him.”

“You were the evening packet. Once with a saucepan.”

Mara put her hand on the sill. “You remember that?”

“I remember destinations. Names take longer.” He dried the bottle neck with a corner of cloth already wet. “Len Sayer.”

She showed him the fragment without releasing it. His thumb stopped rubbing the glass.

“I’m looking for the rest.”

“The closed ferry office. Under the floor beside the passenger wicket.”

“You remember where a piece of paper was going?”

“I put it there.”

A milk drip reached his cuff. He set the bottle down.

“Will you take me?” Mara asked.

He looked toward Dock Lane, then fetched his coat.

The ferry office stood beyond the disused landing, its timetable still offering departures every twenty minutes. Someone had painted CLOSED across the glass, leaving the Sunday service legible. Mara could see the whole building with her route book shut.

“The address still works?” she asked.

“The ferries don’t. Different department.”

A woman was stacking onion sacks inside the adjoining chandlery. Len approached with his hat in his hands.

“Mrs. Pell. Might we trouble you for the office key?”

“You might. You won’t get it on might.”

He explained that he had left a personal paper beneath a loose board before the closure. Mrs. Pell leaned against the sacks.

“The council wants a list of anything taken out. I’ve had enough letters about missing brass.”

“Paper,” Mara said. “We’ll show you what we take.”

“And I’m supposed to stand watching while my supplier shuts for dinner?”

Mara looked at the parcel on the counter, addressed to a sailmaker three streets uphill. Its wrapping had dark grease spots where someone had tried to carry it against an apron.

“I can deliver that. Bring back his signed acknowledgment.”

“By noon. He owes me for the last two.”

“Delivery. I charge separately for making people decent.”

Mrs. Pell considered her satchel. “Leave that here.”

“My route book stays with me.”

“Then the old gentleman does. He owes me six weeks’ storage for that stool he claims he’ll collect.”

“Five,” Len said.

“Excellent. You’re keeping count.”

The sailmaker made Mara wait while he located his spectacles, which were inside the parcel: repaired frames, returned with an invoice. He signed after complaining that Mrs. Pell could have sent a boy. Mara arrived back sweating beneath her collar, with eleven minutes to spare.

Mrs. Pell read the acknowledgment, opened the office herself, and remained at the doorway with her lunch. No request went to the Registrar.

Inside smelled of damp rope and mouse droppings. Len walked straight to the passenger wicket. Beneath it, a strip of oak crossed the floor between two iron posts; beyond that strip passengers had once queued for the landing.

“Third board from the wall,” he said.

Mara knelt. The board had a thumb-sized hole where a knot had fallen out. She lifted it with two fingers while Len steadied himself against the counter. In the shallow space below lay a flat tobacco tin.

“That’s mine too,” he told Mrs. Pell.

“It isn’t brass. Proceed.”

The tin contained a folded receipt half, spotted brown along one edge. Mara laid it beside Tomas’s fragment on the counter. The torn edges fitted, including a small triangular bite beneath the printed number. Both pieces bore 6418.

On the recovered half she read: “COUNTER-RECEIPT. EXCHANGE 6418. EXECUTED.” Below was the ferry office’s address and a reference to fourteen Wren Passage. The lower portion carried an official stamp. There was no account of what Tomas had been told.

“Executed,” Mara said. “That’s a word people get paid to leave unexplained.”

Len crouched with difficulty and rubbed the oak strip with his handkerchief. Dirt came away; a pale indentation remained. Mara brought the receipt down beside it.

The scar in the ferry threshold read 6418.

Mrs. Pell shifted her lunch to her other hand. “Oh. One of those.”

“You know what it is?” Mara asked.

“My mother’s shop had one. Clerk showed us after the exchange. A gouge you can cut yourself; those little figures go through the grain.” She swallowed. “They only come when an exchange is authorized.”

Mara ran a nail across the number. The grain continued through each figure, compressed into its shape. She looked from the scar to the receipt marked EXECUTED. Someone had completed an authorized exchange involving these two addresses. Her brother had been given one torn part of its record.

Len reached for the counter to pull himself up. Mara helped him before she remembered she was angry.

“Were you here when this happened?”

“I brought that half here afterward.”

“From where?”

“Your brother’s lodging.”

The office clock had stopped at ten past four. Mrs. Pell folded the paper around the rest of her lunch.

“I saw Tomas sign at his threshold,” Len said. “Seven years ago. His own name.”

“And yours?”

“I signed as the independent witness.”

Mara’s fingers tightened on his sleeve. She released it.

“What did you tell him?”

“I can’t give you that answer here.”

“You’ve had seven years to find a room.”

He took the handkerchief from the counter and folded the dirty surface inward. “Yes.”

Mara put both receipt pieces in the tin and secured it in her satchel’s buttoned compartment. Mrs. Pell inspected the empty space beneath the board, watched Mara replace it, and locked the office. The key went back into Mrs. Pell’s apron pocket.

Outside the closed ferry office, Mara stood beside Len while he struggled with his coat button. Across the quay, the district office accepted complaints until two. She could put his name before a clerk today. She could also hand over the only person who had admitted standing beside Tomas.

“I’m going to Ines Reed’s workshop,” she said. “You’re coming with me. After that, my brother gets to hear what you’ve told me.”

“Would you prefer I walked ahead?”

“Beside me. I’ve done enough looking for people.”

He abandoned the button. Mara waited while he tested the curb with his shoe, then matched her pace to his. At the corner she took the turning toward Bell Foundry Street, keeping him on the inside, where the carts would give him room.