Mara replayed it until the sound blurred into a tactile presence. The voice felt like an invitation and a warning braided in the same breath. She read the comments and found that others had the same knot in their stomachs. A few of them reported real-world encounters: a mailbox painted white with a single black dot, a library shelf arranged in the sequence of episode stills, a door at the laundromat that no one seemed to remember being there before.