Adult voice, calm and unhurried pace — never rushed, even during tense moments. Low-to-mid pitch, minimal brightness or "smile" in the tone. Delivery should sound almost detached or flat, like someone reading a report rather than performing a story — the horror comes from the calm, not from vocal excitement. Even, consistent volume with no big dynamic swings or shouting. Natural pauses rather than dramatic ones. Should sound like it could be a late-night radio broadcast or field-recording narration — not a "YouTuber voice," not upbeat, not warm. Minimal vocal fry or breathiness. Clear diction, but not overly polished or "announcer-perfect" — a slight plainness is good.
Gender: open — either a low male voice or a flat, unadorned female voice can work. Avoid anything that sounds young, chipper, or character-y.
The fog rolled in thick that night, obscuring everything beyond arm's length. There was a sound, faint at first, then growing louder, like the drag of something heavy across the cobblestones.