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The shaft groaned as Zara crawled forward, her palms scraping against the ribbed metal surface. Every movement echoed, magnified by the vent's tight walls and the chaos pulsing through the facility beyond.

Red light strobed through the grates above, casting flickering shadows that stretched like claws along the tunnel. The alarm continued to wail in a pulsing rhythm—WEEE-OOO. WEEE-OOO.

In front of her, Leo whimpered.

"Mama," he whispered, barely audible over the noise. "What's that noise?"

Zara didn't stop crawling. Her knees ached, her elbows bruised, but she forced a soft smile. "It's just a game, sweetheart," she murmured. "Remember? Quiet as mice."

"Okay." Leo nodded, face pale but resolute. His voice was so soft. Trusting.

She turned her attention back to the shaft. Her breath was hot against the metal, the air stifling. Sweat slid down her spine, dampening the shirt that clung to her skin.