The floor was shaking beneath them, every shudder felt like a warning from the building itself: you don’t have much time.

Leah’s heart pounded so hard it felt like it was trying to break out of her chest. She had one arm hooked under Jason’s, half-pulling, half-dragging him as they stumbled forward. His injured arm was useless, hanging stiff at his side, and every step made him wince.

“Jason, stay with me,” she gasped, her voice sharp with panic.

“I’m here,” he breathed, though his vision was swimming. He sounded like someone who wasn’t sure how much longer he could keep that promise.

Behind them, the factory was tearing itself...