The file was named Carols_from_King_s_College.rar , and for Elias, it was the digital equivalent of a message in a bottle.

His speakers didn't erupt with the booming organ of "Once in Royal David’s City." Instead, the room went silent—the kind of silence that feels heavy, like thick snow falling in a graveyard. Then, a single, high-tenor note pierced the air. It wasn't coming from his speakers; it seemed to be vibrating from the walls themselves.

Panic surged. Elias tried to shut down the computer, but the power button was dead. The "Procession" was moving closer. The tenor note grew louder, layering upon itself until it sounded like a thousand voices screaming in perfect, haunting harmony.

A normal person would have deleted it immediately. Elias, fueled by a mix of caffeine and curiosity, double-clicked.