Lumen Reads

Dark Current

Read Chapter 8: The Cipher

The first gray light bled through the cracks of the barn planks when Claire shook him awake. Étienne came up swinging, years of instinct turning his palm into a blade-edge before his mind caught up. She dodged it easily. Of course she did. She’d trained for this.

“Easy,” she said, stepping back. “We clear the Loire by mid-morning, or we don’t clear it at all.”

He blinked the grit from his eyes. “They’ll have roadblocks by now.”

“They’ll have the obvious ones. That’s why I’m riding point.”

She handed him a canteen and half a packet of stale biscuits, already gone by the time he finished tying his boots. Outside, the farm’s wrecked fence line slanted into the mist. The bicycle leaned against the well, banged-up but serviceable. Claire’s own bike was newer, fitted with a rack for the pack she’d thrown together from her house. Somewhere in that pack was the data chip, wrapped in a strip of cloth so it wouldn’t short against her phone battery.

They rode west along the field margins, keeping to the treeline where the road bucked into gravel tracks. The silence was heavy with post-storm. No birds. No distant engine hum. Just the crunch of tired wheels and the rhythm of two people too scared to speak.

They made eight kilometers by the time the sun burned the mist off the river valley. Claire signaled for a halt under a dying oak. She pulled out a paper map, the kind she’d once mocked Étienne for preferring.

“Fifty k to the lab at Orléans University,” she said, tapping a cluster of buildings on the Loire’s north bank. “Assuming the bridges hold.”

“Assuming the professor’s still alive,” Étienne said.

Claire did not look up.

The plan had formed in the barn, as much from desperation as logic. The chip’s client file on Keystone was encrypted with institutional-grade armor, the kind that would take weeks to brute-force on a laptop. But Étienne knew a man who had spent twenty years cracking that exact class of encryption for national security research—Professor Julien Sarrazin, an old mentor from his polytechnic days, who’d later moved into theoretical cryptography at Orléans. Sarrazin had taught Étienne the difference between a lock and a password, and how each meant nothing if you understood the cost of entry.

They reached the northern edge of Orléans by late morning. The city had clawed together a semblance of order—hurried intersections, volunteer brigades, chalk marks on rubble-sifted streets—but every face wore the same look of feral relief. Alive, but not sure for how much longer.

The university campus sat dark and abandoned. Lecture halls empty, courtyard fountains dry. A few dozen stranded students had pitched tents under the colonnades, but they scattered when Claire drew her pistol. She didn’t point it at them. Just let them see it. Terror made strangers faster than fear.

Sarrazin’s building was a brutalist slab of concrete from the seventies, five floors of applied physics and computational theory. The ground floor door hung ajar, its electronic lock dead and useless. Victorious scar tissue from the storm.

They climbed to the fourth floor. The lab had been ransacked before any storm could take credit for it.

Drawers upended. Bookshelves stripped to splinters. A desktop monitor lay shattered on the floor as if thrown in rage. Fluids—coffee, ink, something else—stained the tile in long, swiped arcs.

Sarrazin sat upright in his office chair, facing the window. A length of cord around his neck. The note pinned to his chest was in thin, elegant handwriting, an apology to his wife for the cowardice.

“He didn’t do this,” Étienne said.

Claire swept the room with her pistol, checking corners. “How do you know?”

“Because the chair’s pushed back from the desk.” He pointed. A man who’d hanged himself wouldn’t bother to align his keyboard with the monitor. Sarrazin had been staged. The cord bite on his neck was wrong too—the knot sat at the jawline, the signature of a trained cross-face drag, not a drop.

Claire crouched over the body, lifting the stiff collar. “Brass fingerprint.” She tapped the faint green-gray residue on his skin. “Whoever handled him was wearing gloves with copper alloy in the weave. That’s security contractor gear.”

And there it was—the private firm fingerprints Claire herself had once worn.

She did not flinch, but her jaw tightened. “The watchdog protocols. The ones my firm built.” She looked at Sarrazin’s still face. “They had kill-switch clearance for the physical security network. If someone inside used it to track your professor, they’d have boots on the ground in under an hour.”

“Then they’re close,” Étienne said.

“They’re closer than that. They’re already here. They didn’t come to question him. They came to make sure his mouth stayed shut.”

Étienne forced himself to examine the prof’s desk. A half-drunk cup of tea, cold enough not to have evaporated. A stack of journals, sorted by date to keep current. No laptop. No tablet. The encryption workstation in the corner had been smashed in, its drive removed.

He was about to give up when he saw it, peeking from under the telephone. A yellow Post-it, curled and bruised at one edge. Sarrazin’s handwriting was a near-illegible scrawl, permanently angry at the effort of writing.

*Check the archives.*

Étienne held it up. Claire read it twice. “Archives of what?”

He scanned the room. Filing cabinets, yes. But this was a computer lab—Sarrazin’s digital archives would live on a university network that no longer had power, let alone connectivity. Yet the prof had died clutching this scrap of paper.

Étienne moved to the window and looked out. Far below, the physics complex’s utilitarian service yard. And beyond that, separated by a chain-link fence, the pale concrete cylinder of the university’s archives annex. A building designed to hold physical media—paper, microfilm, backup tapes—because even here, no one fully trusted the cloud.

“The paper trail,” Étienne said. “Keystone’s contracts. The RTE board signatures. If they’re hunting him, they’ll hunt the physical record too.”

Claire holstered her pistol and pulled the data chip from her pack. “Then we get down there before they do. Your man left us a breadcrumb.” She tapped the Post-it. “Let’s follow it.”

Étienne looked once more at Sarrazin’s body, the staged suicide, the neat little apology note. He reached down and straightened the collar Claire had disturbed. Then he dipped his fingers into the cold tea and pressed a single wet fingerprint on the note he’d taken.

“Can you not,” Claire said.

“He’d know I came,” Étienne said. “He’d want me to finish it.”

They moved down the stairwell, past the shattered door, into a university evacuated of purpose. But Étienne’s mind burned with the next calculation: if Sarrazin was already dead and his lab already gutted, whoever had done it would expect the thread to die here.

But a Post-it meant the thread didn’t end at the lab. It led deeper. And if the archives still stood, the proof might lead further still—all the way to a false accusation aimed at him, made by someone who’d killed a professor to keep a secret no one had even named yet.