Elias looked at his physical door. It was closed. He looked back at the screen. The figure in the video slowly raised a hand and knocked. Three sharp raps echoed through the apartment.
When he finally clicked play, the screen didn’t show a video. Instead, it showed a live feed of his own hallway, filmed from a corner where no camera existed. In the grainy black-and-white footage, a figure stood outside his bedroom door. The figure wasn't moving, but the timestamp at the bottom was counting down—not up. It read: . 19400(1)(1).mp4
Elias was a digital forensic analyst, the kind of person who spent his days looking for the "fingerprints" left behind by hackers. But this file had no metadata. No "Date Created," no "File Size," and no "Source." It was a ghost in the machine. Elias looked at his physical door