The dust came from the west road at midmorning, and every rifle on the wall came up.
Dana's whistle cut the air — two short, one long: riders, unknown — and Ethan was on the wall walk before the echo died, Ellie beside him, Joel two steps behind with his rifle already shouldered.
"Count," Joel said.
"Six," Dana called from the gate tower. "Moving slow. One's got a white cloth on a stick."
A parley flag. Ethan's stomach tightened. Wardens didn't fly parley flags. Wardens didn't need to.
They rode in under the gate guns with their hands visible — five of them gaunt and road-worn, flak jackets patched with a dozen different insignias, and at their head a woman with grey-streaked hair pulled back tight and a Firefly pendant at her throat.
Tommy, on the wall beside Ethan, went very still.
"That's Marlene," he said quietly.
Ethan glanced at him. Tommy's jaw was tight, his good hand white-knuckled on the rail. He'd left the Fireflies years ago — walked away from the whole cause — and Ethan had never asked why. Watching his face now, he understood it hadn't been a clean leaving. The kind you carry.
Hale saw it too. "Easy," he murmured. "They're flying parley."
Ellie was down the wall ladder before anyone could stop her.
She hit the dirt at a run and Marlene was off her horse and they collided in the middle of the street — Marlene's arms around her, hard, her face pressed into Ellie's hair, and Ellie making a sound Ethan had never heard from her, something between a laugh and a sob.
"I promised her," Marlene said, not letting go. "I promised your mother I'd keep you breathing. Look at you. Look at you."
Ethan stood at the wall's base and watched, and felt something complicated and small move in his chest. He'd never seen Ellie held like that — like something precious, not something useful. Joel came down beside him, and his face was doing something complicated too.
"How long's it been?" Ethan asked.
"Years," Joel said. "Since before Boston." He watched Marlene hold Ellie for another moment. Then, low: "Stay sharp, kid. Reunions make people stupid."
But his rifle was pointed at the dirt.
Maria's office. The map of the valley on the wall. Marlene sat across from Maria like a woman who'd forgotten how chairs worked, her escort — the scout Petra, and three others — waiting outside with Dana's people.
"Kestrel's crawling," Marlene said without preamble. "The Director landed yesterday. Two more transports since. She's not posturing, Maria. She's counting days."
"You've been watching Kestrel," Hale said. It wasn't a question.
"Two years." Marlene's eyes found Ethan. "We've been fighting Greyreach's network since before you were stealing their file folders, D-09."
The room went cold. Ethan didn't flinch. "Then you know what they want."
"I know her name." Marlene leaned forward. "Ilsa Vane. She doesn't work for Greyreach — Greyreach works for her. And above her, the money." She looked around the table. "You want to know what they're building? It's not a weapon. It's a market."
Silence.
"Immunity," Marlene said, "is the most valuable thing left in the world. And they've spent twenty years making sure they're the only ones holding it."
Ethan's hands had curled into fists on the table. He made them open.
"Why are you telling us this?" Maria asked.
It wasn't hostile. It was the question of a woman who'd had a trader counting her patrols a week ago and had learned to count back. Marlene seemed to recognize the shape of it.
"Fair," Marlene said. She pushed up her left sleeve. A burn scar ran from wrist to elbow, ropy and old. "Denver relay, two years ago. We hit one of Vane's transfer stations and she burned it with us inside it. Three of my people didn't walk out." She let the sleeve fall. "I've paid for the right to ask."
"Because we can't kill it alone." Marlene's voice dropped. "We've bled for two years and we've got nothing but names. You've got the one thing they've never had —" she looked at Ethan, then toward the clinic, where Sam slept, "— kids they can't put back in the box. And I've got the map to every hole they crawl in."
"Where are the others?" Ethan asked. "Sam said there were others."
"Two that we can find. Maybe three." Marlene held his gaze. "I'll give you all of it. The facilities, the routes, the names. But I need Jackson in this war, Maria. Not watching the road. In it."
Tommy shifted by the window, his sling stark against his shirt. "Last time I was in your war, Marlene —"
"I know." She didn't look away from him. "I know, Tommy."
And then she turned to Ethan, and her expression changed — softened into something older and sadder.
"I knew your parents," she said.
The office tilted. Ethan gripped the table edge.
"David and Mira," Marlene said. "Nightingale. Your mother got me out of a Greyreach cell in '33. I owed her my life and I never got to pay it back." She paused. "They're why I started looking for you, Ethan. Long before Kestrel."
Ethan couldn't breathe. Couldn't speak. His mother's name in a stranger's mouth — Mira, said like someone who'd actually known her, not like a file header. Nine years of not knowing, of log sheets and initials and reactivated files, and this woman carried the answer in her chest like a second heartbeat.
Beside him, under the table, Ellie's hand found his — and held on.
The courier came at dusk.
One rider, Warden blacks, a white flag and a sealed envelope. Dana's people walked him to the gate and took the envelope at gunpoint and sent him back the way he came.
Maria read it in the office with Hale, Tommy, Joel, and Ethan present. Her face didn't change. Then she set it down and read it aloud, flat:
"Return the asset designated 38-C within five days. Comply, and the valley is left alone. Refuse, and we will take what is ours — and the valley will pay the difference."
No signature. There didn't need to be one.
Tommy's good hand curled around his sling strap. "Five days."
"She won't wait five days," Hale said. "She's counting on us spending all five arguing."
Maria looked at the letter for a long moment. Then she folded it, once, precise — and Ethan heard his own history in the gesture, the Nightingale in her, whoever she'd been before Jackson.
"Jackson doesn't trade people," she said.
Outside, the gate lamps were lit. Somewhere west, past the dark ridges, Kestrel's floodlights burned — and counted days.