The Attic Vents

The attic was pitch black, the kind of darkness that felt heavy, like wet wool. Sarah pulled herself through the access hatch, the rough insulation scratching her arms. She clicked on her phone's flashlight, the beam cutting a narrow tunnel through the dust.

*Check the attic vents.*

Caleb’s message was still glowing on her screen. He wasn't dead. He was in the wind, playing a game of cat and mouse with a woman who had already burned down half his life. But why send her here? Why now?

The HVAC system for the university lab was a labyrinth of galvanized steel, humming with the low vibration of the building’s life support. Sarah crawled over the joists, her knees bruising on the plywood. She reached the main vent, the one that fed the biology department below.

It wasn't just a vent. It was an access point.

The screws on the maintenance panel were loose. Someone had been here recently.

Sarah used her thumbnail to turn the first screw. It fell into her palm, warm. She removed the panel and shone the light inside.

Wedged into the ductwork, taped to the side with silver duct tape, was a black box. It was small, maybe the size of a router, with a single antenna pointing down into the lab.

A jammer. Or a transmitter.

Or a detonator.

"Sarah?" Marcus’s voice drifted up from the hatch. "The power is out in the whole building. The backup generators are kicking in, but the sequencers are down."

"It's not a power outage," Sarah whispered. "It's a localized EMP."

She reached for the box. If she could disable it, maybe they could get the machines running again. Maybe they could prove the DNA before Elena’s lawyers filed the injunction.

But as her fingers brushed the tape, the box chirped. A red light blinked on.

*Armed.*

Sarah froze. It wasn't a jammer.

It was the bomb.

"Get out!" she screamed, scrambling backward. "Marcus! Get everyone out!"

She didn't wait for an answer. She dove for the hatch, dropping through the opening and landing hard on the linoleum floor of the hallway.

"Run!" she yelled, grabbing Marcus’s arm. "It's in the vent!"

They sprinted down the corridor, the emergency lights casting long, eerie shadows. Dr. Thorne was ahead of them, moving with surprising speed for an old man in handcuffs.

"The stairs!" Sarah shouted. "Don't use the elevator!"

They burst into the stairwell just as the ceiling above them buckled.

The explosion wasn't the fiery inferno of the van. It was a concussive wave, a hammer of air that slammed them against the concrete wall. Dust and debris rained down, choking them.

Sarah coughed, waving her hand in front of her face. "Maya? Marcus?"

"I'm here," Maya choked out, huddled in the corner.

"Marcus?"

Silence.

Sarah crawled through the dust. Marcus was lying at the bottom of the landing. He wasn't moving. A piece of rebar from the ceiling had pierced his thigh.

"No," Sarah whispered. She ripped off her jacket, pressing it against the wound. "Stay with me, Marcus. Stay with me."

"The cup," Marcus gasped, his face grey. "The evidence."

Sarah looked around. The plastic bag was gone. Buried under the rubble of the collapsed stairwell.

"It doesn't matter," Sarah said, though her heart was breaking. "We have Thorne. We have the witness."

"Thorne is gone," Maya said, pointing up the stairs.

The door to the roof was open. Swinging in the wind.

Dr. Thorne had used the chaos to run. Not away from the danger. Toward it.

"He's going to the helicopter," Sarah realized. "Elena has a extraction team on the roof."

She stood up. "Stay with Marcus. Put pressure on the wound."

"Mom, you can't go up there," Maya cried.

"I have to," Sarah said. "He's the only proof we have left."

She ran up the stairs, ignoring the burning in her lungs. She burst onto the roof into a gale of wind and noise.

A black helicopter was hovering over the helipad, its rotors churning the smoke from the explosion. Dr. Thorne was running toward it, his handcuffs glinting in the searchlight.

But he wasn't alone.

Standing by the skid, waiting for him, was Elena.

She wasn't disheveled anymore. She was triumphant. She reached out a hand, pulling the doctor into the cabin.

Sarah sprinted across the gravel roof. "Elena!"

Elena looked down. She smiled. A cold, predatory smile.

She raised a megaphone.

"I told you, Sarah," her voice boomed over the roar of the engine. "I own the board."

The helicopter lifted off, banking sharply. Sarah watched it go, the wind whipping her hair across her face. She had lost the diary. She had lost the cup. She had lost the witness.

She fell to her knees on the gravel. It was over.

But then, her phone buzzed.

A text. From *Caleb*.

*Look down.*

Sarah frowned. She looked at the roof. Nothing.

*Not there,* the message read. *The bridge.*

Sarah ran to the edge of the roof. She looked out over the city, toward the river. Toward the bridge where she had met him.

It was lit up against the night sky. Traffic was flowing normally.

Then, the lights on the bridge flickered. Once. Twice.

And went out.

A second later, a massive explosion ripped through the center span.

Cars plummeted into the water. Steel twisted like licorice.

Sarah stared in horror. Caleb hadn't lied. The bomb was real.

But he hadn't detonated it.

Her phone buzzed again.

*She thinks she won,* Caleb wrote. *But she just cut off her only escape route.*

Sarah looked at the burning bridge. It was the only road to the private airfield where Elena’s jet was waiting.

Elena was trapped in the city. With Sarah.

And the war wasn't over. It had just moved to the streets.