How, you may ask?
When you go into the inn in New Tristram, there’s no one there, yet it looks like it’s supposed to be occupied. Leah, who has been defeated as Nu-Diablo (spoiler) has her room still intact, as if she’ll pop in any minute.
I don’t know why, but this “take out the NPCs and leave everything else as if they were there” is something I find unsettling, like you’re visiting a memory of the place instead of the actual place.
And I say this while playing a necromancer with an army of skeletons.
