Chapter One

Sarakhs Free Trade Zone, Khorasan Razavi Province, Iran — Present Day

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The blast should not have found anything at all.

Colonel Farhad Nassiri had the geological survey open on the tablet before his driver had finished parking, because that was how he had survived eleven months of a war that had already killed better men than him for smaller mistakes than not reading a report before he arrived somewhere. Sarakhs sat on alluvial fan and wind-laid silt, the survey said, forty meters of it in places, nothing beneath but more of the same going down to bedrock nobody had ever needed to reach. The rail authority wanted a new spur run southeast off the existing line, out toward the border crossing that had gone, in the last five months, from a sleepy customs post to the single most valuable stretch of track in the Islamic Republic. Ten million tonnes of annual capacity sitting mostly idle, the free zone's own numbers admitted, because there was nothing coming back the other way to justify the run. That, at least, was a problem Nassiri understood. Empty track was a problem you could solve with contracts and patience.

What his security liaison had radioed in from the blast site forty minutes ago was not a problem he understood yet, which was exactly why he had come himself instead of sending someone whose report he would only have had to double-check.

The crew had stopped work entirely. That told him something before he even got out of the car — twenty men standing in a loose, silent half-circle around a hole in the ground, none of them smoking, none of them talking, which in his experience was not what men did around an interesting archaeological find. It was what men did around something that had made them afraid without being able to say why.

"Who else knows," Nassiri said, before he had reached the edge of the cut.

His liaison, a young captain named Ghorbani who was competent enough that Nassiri had brought him along specifically because he tended not to embarrass himself in front of foreign contractors, understood the question correctly on the first try. "The blast crew. Site security. Myself. I told the foreman it was an unexploded ordnance concern and had the perimeter cleared before anyone got close enough to photograph it."

"Phones."

"Collected. All twenty-three."

Good. That was the correct number, which meant Ghorbani had actually counted, rather than trusted a headcount someone gave him. Nassiri had built his entire second career, the one that had started the morning he learned Khamenei's compound no longer existed and neither did most of the men he used to answer to, on the difference between officers who trusted a number and officers who checked it.

The chamber was set into what had been, until four hours ago, an unremarkable shoulder of packed earth twelve meters below grade. The blast had opened one corner of it rather than destroying it outright, which Nassiri chose to read as luck rather than skill, because the engineering report he'd skimmed in the car had not accounted for a cut stone course this deep, this far from any known settlement, in silt that was not supposed to hold a wall at all. Baked brick, by the look of the exposed edge. Old enough that the mortar had gone the color of the surrounding earth, so that from more than an arm's length away the wall simply disappeared into the ground around it, which was very possibly the entire point of building it that way.

He climbed down into the cut himself. He did not ask permission and nobody offered him a hand, which he also read correctly — the men on this site did not yet know what they were guarding, only that they had been told, by someone whose rank made the question of why an unwise one to ask twice, that they were now guarding something.

The gap in the brick was perhaps a meter across. Beyond it, his liaison's light showed a chamber no larger than a modest room, dry in a way that eleven months of desert war had not made him take for granted — dry the way a place stays dry only if it was built, deliberately, never to let water in. There were niches cut into three of the walls. Two were empty, long since collapsed to dust and a residue Nassiri did not look at closely enough to identify. The third held a shape wrapped in cloth so degraded it came apart at the edge of his light like smoke.

He did not touch it yet. He had not survived this long by being the man who touched things first.

"Get me Tehran," he said, and then, before Ghorbani could reach for the radio: "No. Not yet."

Ghorbani looked at him — not confused, exactly. Waiting.

Nassiri understood, standing in a room that had been sealed by hands he could not begin to date, why he had said it. It was not sentiment, and it was not curiosity, though he would have accepted either explanation if someone had pressed him. It was the same instinct that had kept him alive since February, the one that had nothing to do with loyalty and everything to do with arithmetic: a man who reports a discovery immediately becomes, from that moment forward, merely the man who found it. A man who understands what he has found before he reports it becomes the man who controls it.

In a system that had just spent eleven months demonstrating, in the most literal way possible, what happened to men who became replaceable, Nassiri had no intention of being replaceable by his own good manners.

"Three people know what's down here," he said. "You, me, and whoever built this wall a very long time ago. I would like to keep that number small for a few hours longer than protocol strictly requires. Can you manage that, Captain?"

"Yes, sir."

"Good." He turned his light, at last, on the shape in the niche, and stood there long enough that Ghorbani shifted his weight once, twice, before Nassiri spoke again, quietly, mostly to himself. "Then let's see what your father's father's father was so afraid of, that he built a room the desert itself couldn't find."

He reached out and drew back the first fold of cloth, and it came away in his hand like ash, weightless, and beneath it the thing inside was not weightless at all — it was warm, though the chamber around it had held a decade's worth of winters, and it did not smell of a dead man's tomb.

It smelled, very faintly, of something green.