The machine in Elias's basement smells like hot copper and Mara's perfume. That's impossible. She's been dead nine months. He keys in the date: three years ago, the morning of the crash on Route 9. He has practiced this a thousand times. Stop the car. Stop the truck. The coil screams and white light swallows the room. When he opens his eyes, he's in the passenger seat of their old sedan, and Mara is alive, humming, hands on the wheel.

Elias grabs the wheel and yanks the car off Route 9 before the bridge. Mara slams the brakes, furious and scared. 'What is wrong with you?' The truck that should have hit them roars past in the rain, horn blaring. They're alive. Both of them. He's laughing and crying at once. She just stares at him like he's a stranger.

Mara recovers fast and floors it home, demanding answers. But the town outside the windows is wrong. Half the houses are dark and boarded up. A checkpoint blocks Main Street, soldiers waving them back. 'This isn't our town,' she whispers. By saving her, Elias changed something much bigger. The world traded her death for something worse.

Soldiers surround the car. Their commander steps forward and pulls off her helmet. It's Mara, older, scarred, in uniform. Two versions of the same woman stare at each other. 'You brought a copy of me into a war,' the soldier Mara says. 'Now you'll help us end it, or we lose both of you.'

Elias helps the soldiers raid the lab and shut the machine down for good. In the blast, the copied Mara dissolves, but the timeline snaps back clean. He wakes nine months ago, at her real funeral, grief intact but the world safe. On her headstone, in fresh ink that wasn't there before: 'Thank you for letting me go.'