Oz was in the east wing corridor when Henrietta found him in the morning.
Not at the door. At the midpoint of the passage, standing with his right hand flat against the wall at shoulder height, moving it slowly along the stone the way you moved a hand when you were reading something by touch rather than sight. He was going in one direction, then the other, covering roughly two feet of wall.
She waited in the corridor entrance.
He stopped. He stood with his hand still on the wall for a moment, then took it away.
"Here," he said.
She came to stand beside him. He took her hand and placed it flat against the stone where his had been. The wall was cold, as stone walls in old houses were cold in autumn. But in this particular section, roughly two feet across, it was colder than the surrounding stone. Not dramatically. Just enough that when you moved your hand outward from the centre you could feel the temperature shift, the way you felt a draught from a gap you could not see.
She took her hand away.
"How far does it extend," she said.
"Vertically, I don't know. Horizontally, about two feet." He looked at the wall. "It has been this way for some time. The stone face shows no change, no damage, nothing that would explain it."
She looked at the wall too. Plain stone, the same grey as everywhere else in the passage. Nothing to see.
He turned and leaned against the opposite wall with his arms crossed. "The diary," he said. "What have you made of it."
She had been waiting for him to ask. She thought about it for a moment, ordering what she would give him from what she was not yet ready to give.
"Victoria uses the word arrangement four times," she said. "Each time as though the reader already knows what it means. The arrangement with the east wing. An arrangement she made with her mother before her mother died. An arrangement she intended to maintain." She paused. "She never defines it."
"What else."
"A page is missing. Cut out, not torn. Near the end of the visit entries, after an entry where she describes going alone to the east wing at night to check the door. The entry stops mid-thought. The page after it is from the following spring and reads as though something has already been decided."
Oz said nothing for a moment. "The arrangement with her mother," he said. "Before her mother died. That is the one I want to understand."
He pushed off the wall and walked back toward the main house. She followed him out of the corridor and into the warmer air of the entrance hall and he went toward the library without saying anything further.
* * *
Aldric Crane arrived in the mid-afternoon.
Holt brought the carriage to the front and Crane stepped down with the slight careful movement of someone who had been sitting for too long and knew better than to rush the adjustment. He was perhaps fifty-five, lean, with a scholar's particular relationship to his own body, which was one of general inattention. His coat was good but worn, his leather satchel so far gone at the corners that the stitching was doing more work than the leather. He looked at Rosemere's front face as he walked toward the door with the expression of someone who had been studying a thing from a distance for years and was finding that the reality of it was both what he had expected and somehow more.
Eleanor met him at the door. He shook her hand and thanked her with the warmth of someone who genuinely had not expected to receive what they asked for.
He looked at Oz and Henrietta with frank and unguarded curiosity.
"I understand you are here about the deaths," he said. "I am sorry for that." He glanced at the house front, briefly, then back. "This house has had enough of them."
Eleanor's expression did not change. Henrietta noted the sentence and moved on.
They took tea in the library. Crane set his satchel on the floor beside his chair and sat forward with the alertness of someone who found the present conversation genuinely interesting and had no interest in performing otherwise. He talked about Rosemere the way a person talked about something they had been thinking about for a long time: precisely, with the specific pleasure of finally having an audience who might understand the precision.
He knew the 1523 construction date, the original builder's name from the surviving contracts, the approximate footprint of the main house before any additions. He described the architectural character of the original build with the ease of someone who had looked at a great many documents about it over a long period. He was knowledgeable and he was not performing his knowledge, which were different things.
Then he reached the east wing and slowed slightly.
"The east wing was built in 1641," he said. "I believe it was built on the site of something that burned that same year. The county records describe the fire but not what burned. The architectural surveys I have found describe the east wing as new construction on a cleared foundation." He looked at Eleanor. "I had assumed you were aware of this."
"I was not," Eleanor said.
Crane accepted this without surprise. "The estate records from that period would explain it, I imagine. If they exist."
"They don't," Oz said. "The ledgers have a gap from 1639 to 1643."
Crane looked at him. "Ah." He said it the way people said things when a piece they had been missing slotted into place. "That explains why I could find no corroboration from the estate's own records. I assumed they had been lost."
"What was on the foundation before the east wing was built," Oz said.
"That is what I have been unable to establish. The fire itself is documented only in the neighbouring landowner's records, a boundary dispute with the Veldacre estate that was resolved the following year. One line about a fire witnessed from the neighbouring property. I followed it because fires that appear in one record and nowhere else are generally more interesting than fires that appear in several."
Oz said: "How did you find that document."
"I was researching a different property entirely, two miles east. I found the dispute record in the county archive, noted the reference to Rosemere, and spent the next two years trying to understand what it meant." He looked at his cup. "I have had limited success."
The room was quiet for a moment. Outside, the afternoon light was going thin.
"There is a survey document in the county archive," Crane said. "From 1642, the year after the east wing was built. I did not bring it because I was not certain it would be relevant. But if I may be permitted to say so, I think it might be now." He looked at Eleanor. "The language used to describe the east wing in that survey is unlike anything I have encountered in any other architectural document of the period. I can have it sent."
"Do that," Oz said.
Eleanor looked at him briefly and then at Crane. "Please," she said.
* * *
After tea, Crane asked, with the phrasing of someone who had been composing the question for two years, whether he might see the east wing.
Eleanor looked at Oz.
"Not the interior," Oz said. "The exterior."
They walked the east wing's outer face in the late afternoon, coming around through the kitchen garden and along the south wall. Crane moved with the focused attention of someone who knew how to look at old buildings: slowly, close to the stone, stopping at intervals. He noticed the join between the east wing and the main house without being directed to it.
He put his hand on the line where the two sections of wall met.
"This join is wrong," he said.
Oz stood beside him. "Wrong how."
"The east wing stone is cut differently from the main house stone." Crane ran his finger along the join. "Not merely the age difference, though that is present. The technique is different. The dressing on the east wing stone is finer, more deliberate, as though whoever built it was following instructions that specified something about the construction itself rather than merely the dimensions." He looked at the wall. "The main house was built by craftsmen working to a patron's practical specifications. The east wing was built by craftsmen working to something more precise."
He looked at Oz. "Do you know what that means."
"Different builder," Oz said. "Or different instructions."
Crane nodded slowly. "Or both." He was quiet for a moment, his hand still on the join. "Whoever commissioned the east wing in 1641 knew something specific about how it needed to be built. That knowledge is not common to the period. It is not the knowledge of an architect or a mason. It is the knowledge of someone who understood what the building was for."
He looked at the dark windows of the east wing above them. Every one unlit.
"What it was built to contain," he said, quietly, as though continuing a thought he had not intended to say aloud.
They walked back to the house as the light failed, Crane a few steps ahead with Eleanor, talking about the 1523 stonework. Oz and Henrietta followed.
Oz looked at the east wing wall as they passed it. The dark windows. The wing that sat back from the main face of the house as though it had stepped away from something long ago and never returned.
He said, quietly: "Someone built that wing to contain something. Not to house it. To contain it."
Then they went inside.