The flight to Gaziantep left at six forty in the morning.
They took a commercial carrier, which Sienna had arranged under names that were technically real and had credit histories and employment records going back four years, which was slightly disconcerting to know about and which Della chose not to examine. She sat in seat 14C with Hilton in 14B and Pryce in 14A and thought: this is what an expedition looks like. Four people in a mid-range airline seat. Takeaway coffee. The dawn going orange over the tarmac.
She had been on academic field trips before. Vienna for the Akkadian tablet fragment, Istanbul twice, the Louvre's basement once by means she didn't fully understand even now. She knew the specific grammar of departure: the weight of the bag, the inventory running in the back of the mind, the settling that happened somewhere around thirty thousand feet when the list of things you hadn't done was finally out of reach and you could only work with what you'd brought.
She ran the inventory now.
The Enuma-Keth. Present, warm, the particular frequency it had been carrying since the briefing with Qayin — something anticipatory in it. Not urgent. Just attending.
Joan's third volume, photocopied. The Amman photograph. The Okafor correspondence. Three physical documents for a three-thousand-year-old problem.
Hilton, beside her. The Enkir-Gal present in him at a low resonance she had learned to feel at the edge of perception, the frequency that told her where he was in any room without looking.
"How's the annotating," she said.
Pryce was in the window seat with the printed Okafor correspondence and a pen. He had been reading it since the car to the airport and he had filled the margins. She had not observed the actual writing. The annotations simply appeared.
"The field agent's handwriting is poor," he said, "but his spatial reasoning is excellent. The description of the threshold structure's depth and orientation is consistent with Uruk-period construction in the Euphrates basin." He turned a page. "Whoever he was, he knew what he was looking at."
"Okafor's field agent."
"He has no name in the correspondence. Only an initial. K." Pryce paused in the way he paused when he was about to say something professionally significant. "I believe K may be the same agent who filed the initial survey on the Karacadağ site thirty years ago. The notational style is identical."
Della looked at him. "The same person who filed the anomalous geology report? The one in the Veil's files?"
"The one that read site of interest, classification pending." Pryce made a note. "Yes."
She sat with that. K had been noticing the site for thirty years — filing reports, corresponding with Okafor, then going silent. The letter that stopped mid-sentence. Three decades of the same person returning to the same door and finding it still closed.
"Is K in the archive?" she said.
"There are two personnel files with the initial K in the relevant period. Both are retired. One died eight years ago." A pause. "I have not yet determined which one filed the reports."
She turned to look out the window — Hilton's shoulder in the way, which was fine, which she had learned to read as its own kind of information. He was reading the same photocopied correspondence, and had been quiet since the airport in the specific way he was quiet when he was assembling a picture.
Farida was in the row across the aisle. She had asked for a window seat and had spent most of the flight looking at the sky with the particular stillness of someone practising a long patience. She was not a Veil operative; she was a former Covenant analyst who had spent three years after resigning from the organization making a careful, methodical case for her own trustworthiness. Sienna had reviewed her seventeen times. Della understood the thoroughness.
Once, an hour into the flight, Farida had looked across the aisle and caught Della's eye and said nothing, just nodded once — the way you nod at someone who is already doing the thing you hoped they would do. Della had nodded back.
It occurred to her, watching the clouds through the gap between seats, that everyone on this flight had arrived at this point along a path that hadn't been visible to them while they were on it. Pryce had spent twenty years building the specific archival expertise that was now required. Hilton had spent eleven years developing the particular discipline of the threshold. Farida had spent three years after resignation cataloguing everything she knew and waiting for the right person to arrive. Sienna had run the Veil's field operations for fifteen years and produced exactly the kind of team that could handle exactly this situation.
And she had spent seven years cataloguing objects in a museum, reading language off surfaces, learning to understand what makers had tried to leave behind.
She hadn't known any of it was preparation. Neither had any of them. And yet here they were, all of them carrying exactly the right equipment. The compact had not required a specific person to be born in a specific year with a specific skill set. It had required the right combination to eventually exist. It had bet on the accumulation of human effort and had, apparently, won.
"The question Joan wrote about," she said. "In the third volume."
He looked up.
"She wrote: there will be a question asked at the threshold. You must know the answer." She paused. "She didn't say what the question is."
"She couldn't have known specifically." He turned a page. "She hadn't found the site."
"But she knew enough to warn about a question." Della looked at the photocopied Amman photograph — the inscription she could read and Joan had only partially deciphered. She who crosses between will find what was left for her. "She knew the compact had conditions. Something you had to agree to, not just perform."
"An agreement requires consent," he said. "You said that in the briefing."
"The Covenant translated it out. Because they couldn't fit consent into their framework." She was quiet for a moment. The engine noise of the aircraft, thirty thousand feet, the world at an appropriate distance for thinking. "I don't know what the question will be. But I know what the right kind of answer sounds like."
He looked at her sideways.
"You're not worried," he said. Not quite a question.
"I'm very worried," she said. "That's different from not being ready."
He made a sound that was, she had learned, his version of acknowledging a distinction he found accurate. She filed it in the section of the catalogue that was exclusively his.
She ran back through Joan's letter one more time in her head. The careful phrasing, the deliberate avoidance of details Joan had been afraid to commit to paper. There will be a question. The answer is not a formula. It is a choice. Make it before you arrive at the threshold, not at it. Della had read that paragraph twelve times since the Records room. She had known the answer before she finished the second reading. She knew it still.
The coffee went cold. Pryce filled three more margins. Sienna, in the row behind them, worked on her tablet with the focused efficiency of someone who had converted a six-hour flight into six hours of logistics. The sun came up fully somewhere over the Mediterranean and fell through the window at an angle that caught the dust on the photocopied pages and made them look, for a moment, the age they were.
She thought about K, thirty years of patient reports on a hill in volcanic basalt. About Okafor's letter stopping mid-sentence. About all the people who had found the door and been unable to open it because they had been, each of them, only one of the two things required.
A lot of people had been waiting for this, she thought. Without knowing they were waiting for her specifically.
She found that neither heavy nor light. Just true.
Gaziantep opened below them three hours later — a city on the edge of a plateau, the landscape around it shifting from agricultural green to the darker brown-grey of basalt country. The Karacadağ range was visible on the southern horizon. Volcanic, ancient, patient in the way geological things are patient: without thought, without effort, simply old.
The Enuma-Keth's warmth shifted, almost imperceptibly, as they descended.
It knows, she thought. It's been here before.
Not here. Near here. Five thousand years ago, near here, the people who made the compact had stood at a threshold and agreed to something that had been waiting three millennia to be completed.
She was the completion. She had spent twenty-nine days becoming certain of this, and she was certain now, and she found it neither frightening nor particularly remarkable. It was simply what was true. What had always been true, waiting for her to be in a position to receive it.
"All right," she said, to no one in particular.
Pryce capped his pen. Hilton folded the Okafor correspondence. Sienna powered down her tablet.
They landed.