Just before the screen went black, the audio clicked on. It wasn't his voice. It was a rhythmic, digital humming—the sound of a file that didn't want to be deleted.

In the video, the "other" Elias sat down and looked directly into the camera. He held up a handwritten sign that read: "Don't turn around. They're using your screen as a doorway."

Elias felt the temperature in his room drop. He didn't turn around. Instead, he grabbed his mouse and dragged 0gv02jyse1urefy2mwtwd_source.mp4 toward the Trash bin. The file resisted, growing larger on the screen, the pixels bleeding out like ink in water.

When he double-clicked, the screen didn't show a video. Instead, it showed a live feed of a room that looked exactly like his—except the chair was empty. As he watched, a hand reached into the frame of the video and placed a coffee mug on the desk.

The "source" part of the filename began to make sense. It wasn't a recording; it was a bridge. He realized the string of characters in the title was a set of coordinates for a reality just an inch to the left of his own.