Chapter 34 of 36·5 min read·The night after the rescue, through dawn
Two Copies of the Same Hand
By dawn, Mercer had the instructions in one evidence bag and Jonah’s account in another. The paper in Celia Gant’s ledger had been photographed at Elias Rusk’s boarding house; Jonah’s folded sheet had come from the lining of his coat when officers searched him. Neither page named a victim. Both told someone how to reach Marrowick’s hidden rooms.
Mercer laid them beside each other in the station interview room. Jonah watched from the other side of the table, wrists cuffed to a ring in its center. He had a bruise along his cheekbone and a blanket over his shoulders. He kept the blanket tucked under his hands, as if the cuffs might otherwise catch in it.
“Those are yours?” he asked.
“The one from your coat is.”
“And the other?”
“Celia’s ledger.” Mercer turned the top sheet so he could read it. “You told us you restored details Vale left out. You didn’t mention receiving instructions.”
“I told you I put the marbles where you’d find them.”
“That’s what you told us about the marbles.”
Jonah studied the photocopy. The page directed its reader through the eastern stair passage, then past the settling basin. It ended with one line in type: KEEP THE UPPER LINE OPEN. The same line sat at the bottom of Jonah’s sheet, beneath a rough map of the old outfall route.
He pressed his thumb against the table’s edge. “That came to me before the first scene.”
“From whom?”
“I don’t know.”
“Did you meet them?”
“No.”
Mercer watched him read the pages again. “You followed the directions?”
“Some of them.”
“Which ones?”
“I went to the mill. I found the rooms. I put things where they’d be found.” His voice had lost its defensive edge, though he still looked at the paper rather than her. “I didn’t kill anyone.”
“You knew the scenes were being staged.”
“I knew someone wanted Vale to see them. I thought the rooms were the point.”
“That isn’t the same as not knowing people were dead.”
He pulled the blanket closer under his wrists. “By then, I knew.”
The admission made Mercer look back at the pages. Two recipients. One set of directions. The type was uneven, with the lower case e sitting high on both sheets. Jonah’s map differed from Celia’s copy, but the wording beneath it matched exactly, including a missing word in the second paragraph: “Take the narrow passage after the stair. It will open the basin.” No article before basin. A copying error, not a phrase anyone would choose twice.
Next
Mercer has traced both sets of route instructions to Marrowick’s records-office typewriter, but she still needs to learn who used it to tell Celia how and when to turn the rooms into murder scenes.
“It was under the grate at the outfall. Wrapped in wax paper.”
“Did you tell Celia about it?”
“No.”
“Did you send her anything?”
“No.”
Mercer placed a clear sleeve over the pages. The two sheets had been cut from different parts of the same kind of paper, but the words came from the same typewriter. Whoever sent them had known both routes and expected both of them to use what they found. Jonah had been left to plant clues. Celia had been left to restore the room. Neither had been given a name.
“Your mother knew you were doing this?”
His mouth tightened. “She knew I was going back to the mill.”
“That’s not what I asked.”
“I don’t know what she knew.” He looked up at Mercer. “Ask her.”
Mara was in a hospital room under guard, her injured leg fixed in a brace. The cut at her hairline had been cleaned and closed. She looked smaller without the soaked coat and the workman’s lamp she had carried through Marrowick’s upper routes, but her attention stayed fixed on Mercer as she entered.
“You’ve got Jonah’s paper,” Mara said.
Mercer set the evidence sleeve on the bedside table. “You’ve seen it before?”
“I’ve seen the phrase.”
“Where?”
Mara’s fingers rested on the blanket. Two were taped together. “On a page under the grate. I left it there.”
Mercer pulled the chair closer. “You sent Celia the instructions?”
“I sent her a route.”
“And Jonah?”
“I left him directions too.”
“You gave them both the same wording.”
“I wanted them to know the way through the mill.”
“Why did you use a typewriter?”
“So the pages wouldn’t carry my hand.” Mara looked at the photographs rather than the originals. “I thought that mattered.”
“You knew Celia was restoring the chair.”
“She told me she could make the room work again. She wanted Vale to say what he’d done where nobody could bury it later.”
“Did she tell you the room would be used for murders?”
“No.”
“Did you ask what she meant by ‘the rooms someone could trust’?”
“I asked what she was going to do. She said she’d give them a place to happen.” Mara’s hand slid off the blanket and stopped at the edge of the mattress. “I thought she meant the rooms. I didn’t ask enough.”
“You left instructions for an eleven-year-old to return to a mill where he’d been trapped.”
“I told him which way out.”
“You also sent him back in.”
Mara did not answer. The monitor beside her recorded the steady pace of her pulse. Mercer let the question stay between them while she looked at the word upper on the copied sheet.
“Did you choose the victims?” Mercer asked.
“No.”
“Did you know who was sending the instructions about the murder scenes?”
“I never saw those pages.”
“Celia says the handwriting wasn’t Vale’s.”
“I know.”
“How?”
“Because I know the handwriting on my own.” She closed her fingers against the blanket, then opened them again. “There were two kinds of instructions. Mine told them how to reach the rooms. The other set told Celia how to use them.”
Mercer took out the photograph of the matching typewritten lines. “This is your wording?”
“Yes.”
“The other set. What did that look like?”
“Celia kept those. I didn’t see them.”
The distinction narrowed the investigation without giving Mercer a name. Mara had sent Jonah and Celia into the mill’s hidden routes, but she denied directing the murders. Celia had controlled the chair and flood system, but someone had told her when to use them. Each account left a hand outside the room.
“Why send Jonah back?” Mercer asked.
Mara turned her face toward the window. Rain tapped the glass in small, irregular bursts. “He wanted Vale to say it. I wanted him to say it where Jonah could hear.”
“That’s a reason. It isn’t an excuse.”
“I didn’t say it was.”
Mercer gathered the photographs. “You’ll tell me everything you sent. Every route, every page, every meeting.”
“I will.”
“Then you’ll tell me why the instructions were typed on paper that matches Celia’s.”
Mara’s gaze returned to the sleeve. “I used the machine in the old records office. It was there when I went back.”
“Who else had access to it?”
“I don’t know.”
Mercer left the room with Mara’s admission and no name for the other hand. At the station, she asked the evidence unit to search Marrowick’s records office for the typewriter and its ribbon. The order went out before the morning shift began. If the machine still existed, it had supplied the same false directions to a mother, a son, and a woman who had turned a confession into a trap.
Jonah had been sent back to the mill. Celia had been given the means to make it answer. Mercer had to find out who had chosen the victims and put the dead inside those rooms.