The camera panned right. There was no furniture in the hallway, just a series of identical dark wood doors. Mark stepped into the frame, looking younger, wearing a coat Elias recognized from a family Thanksgiving. He looked pale, his eyes darting toward the end of the hall.

"Is it on?" a voice whispered off-camera. It was Mark, Elias’s brother-in-law. Mark had been gone for six years, having disappeared during a solo hiking trip in the Cascades.

Elias reached for the mouse, his breath catching in his throat. The warning in the previous video felt heavy in the quiet room. He had to decide whether to heed the warning or continue following the digital trail Mark had left behind.