Marcus chose the café.
It was on a side street behind King's Cross, the kind of place that served coffee in mismatched cups and had a chalkboard menu nobody had updated since summer. He was already at a table at the back when Zara arrived on Tuesday evening, sitting where he could see the door, a closed laptop in front of him.
"Not Kavene," he said, before she had sat down. "You said that on the phone like it mattered."
"It does," Zara said.
She told him everything. The envelope. The eleven pages. The red ink. Solis, and the number that did not exist until it called her back. Jordan Fitch, who had never worked at Carver Pennick, and the woman who had asked about him one day before she did.
Marcus listened without interrupting. When she finished, he held out his hand, and she gave him the pages.
He turned them slowly, the way she had.
"The number first," he said. "It's a virtual line. Rented through a reseller in Tallinn, paid for in cryptocurrency, routed through three providers before it touches a UK network. It has been live for fourteen minutes in its entire existence. Eleven minutes on a Tuesday six weeks ago. Three minutes on Saturday."
"Both times to me."
"Only ever to you." He looked up. "It isn't a phone number, Zara. It's a door. She opens it when she wants to talk and bricks it up when she's finished."
"And Fitch?"
"A withheld number, six weeks old. Without a warrant for the carrier records, I can't touch it." He set the pages down. "But these I can."
He took a small torch from his jacket pocket and switched it on. Not white light. A cold violet glow. He angled it low across the first page.
"Colour laser machines print tracking dots," he said. "Tiny yellow ones, almost invisible. Serial number, date, time. Most people have no idea they're there. Under blue light, they go dark."
Zara leaned in. Nothing. He tried a second page, then a third. Nothing.
"Monochrome machine," he said. "Or the dots are switched off. Pity."
Then he ran the torch down the left margin instead, and the grey streak stood out sharp and clean.
"But this is better than dots," he said. "Dots can be disabled. A scratch on a drum can't. Every copy that machine makes carries this line, in the same place, with the same wobble, until someone replaces the drum. It's a fingerprint. Find the machine and you've found the room these were copied in."
Zara was no longer looking at the torch.
She was looking at the wobble. Two-thirds of the way down. A slight kink to the left, like a hesitation.
She had seen it before. She had known that since Saturday morning, the way you know a face in a crowd before you can put a name to it, and she had not let herself finish the thought.
She reached into her bag and took out a folder. The Shoreditch lease amendment. Her revision note, copied that morning for the associate's file.
She laid it beside the timeline.
The same grey line ran down the left margin. The same width. The same kink, two-thirds of the way down.
Marcus looked at the two pages for a long moment. Then he looked at her.
"Where was this copied?"
"Third floor," Zara said. Her voice sounded very far away to her. "Halcott and Boye. The machine by the kitchen. Everyone complains about the line. Mr. Halcott keeps saying he'll ring the lease company."
Neither of them spoke.
"Your firm," Marcus said at last.
"My firm."
She made herself sequence it. It helped. It always helped.
She had printed the timeline on the third floor. Fifteen minutes after she posted it, a man who did not exist rang to tell her he knew about it. Six weeks later, a copy of the same pages, stamped and logged inside a police file, had been run through the same machine and pushed through her letterbox.
The pages had left Fetter Lane, gone into Lewisham station, and come home.
"Someone in your building saw it come off the printer," Marcus said. "That explains the call. It doesn't explain how a police-stamped copy ends up back in the same building."
"Unless the building is where the files go," Zara said.
She thought about Mr. Adeyemi setting a coffee down beside her on the day of the preliminary hearing. Mears remanded. The drone logs disclosed, the flight time to the minute. The defence arguing that the data was corrupted. The forum posts entered into the record, and how difficult the defence had found them to contextualise.
An associate at a commercial firm, a man who worked lease disputes and letters before action, had known the inside of a criminal hearing within an hour of it ending.
She had been grateful at the time. She had not asked how he knew.
She was learning that the things she did not ask were where people hid.
"You can't do anything with this yet," Marcus said quietly. "A scratch on a drum puts a page in a room. It doesn't put it in anyone's hands."
"I know."
"So what are you going to do?"
Zara slid the Shoreditch note back into its folder.
"Find out whose hands," she said.
Marcus studied her for a moment.
"If it's someone at your firm," he said, "then they know your schedule, your desk, your address. They know you better than Solis does."
"I know."
"And you'll be sitting ten feet from them tomorrow morning."
"I've sat ten feet from them for six months," Zara said. "Tomorrow I'll just know it."
On the tube she took out her phone and opened Ola's last message. Hope the weekend was quiet. Her thumb rested above the keyboard for three stops.
Then she put the phone away. Not yet. Not until she knew what she was holding.
She did not go home. She changed trains at Bank and went back to Fetter Lane instead, a little after nine.
Interns were given fobs for the street door. She had used hers a dozen times to finish work late, and nobody had ever questioned it. The building was dark except for the stairwell lights. The burgundy carpet swallowed her footsteps. On the third floor, the copier by the kitchen sat humming in standby, its display glowing a faint green.
She had used this machine hundreds of times and never looked at anything but the start button.
Now she looked at the menu.
Job Status. Log.
The screen filled with a list. Date, time, job type, pages, account code. Every copy made in the last sixty days, in neat columns, the way machines remembered things. Without judgement. Without forgetting.
She scrolled back to Friday.
Fri. 07:12. Copy. 11 pp. 1 set. Acct 004.
Eleven pages. Twelve minutes past seven. The office would have been empty at that hour, except for the one person who was always in before everyone else.
The list of account codes was taped to the side of the machine, curling at the corners, because nobody could ever remember their own. She did not need to read it. She read it anyway.
001 Halcott. 002 Boye. 003 Lindqvist.
004 R. Adeyemi.
She kept scrolling.
Account 004 was not a busy code. Most days it did not appear at all. Associates had secretaries and trainees to do their copying for them. But when 004 did appear, it appeared early, always before half past seven, always a single set.
Wed. 07:03. Copy. 9 pp. 1 set. Acct 004.
She knew that Wednesday. It was the morning Richard Voss resigned, three hours before Dr. Nadia finished her statement.
Thu. 06:58. Copy. 4 pp. 1 set. Acct 004.
She knew that Thursday too. It was the day before the letter reached Dr. Nadia's house. The inquest has been opened. Two sentences, printed, posted locally.
She stood very still in the dark corridor, the green light of the screen on her face.
She took a photograph of the screen. Then a photograph of the list. Her hands were steady. She noted that, from somewhere outside herself, as if it belonged to someone else.
Behind her, the stairwell door opened.
She knew the footsteps before she turned. Unhurried. A little heavier on the left.
"Zara," Mr. Adeyemi said.
His tie was loose. His coat was still on. He was holding two cups of coffee, and he held one out toward her as if he had carried it up the stairs for exactly this reason.
"I saw you come in," he said. "You're here late."