Mom and Dad are gone. Someone's at the door, and they keep coming back.
NO HARM by Joshua Scribner is a supernatural flash fiction piece. The story is a bit like a modern fairy tale, but I'm not sure what the moral would be...don't be rude?
Scribner puts a lot of detail into the "offer," considering the story is only a few pages. I wouldn't mind seeing the visitor again in another story.