Labor Day Meme: Stories That Never Were

From petronelle, who filled this in glorious manner. Give me the title of a story I've never written, and feedback telling me what you liked best about it, and I will tell you any of: the first sentence, the last sentence, the thing that made me want to write it, the biggest problem I had while writing it, why it almost never got posted, the scene that hit the cutting room floor but that I wish I'd been able to salvage, or something else that I want readers to know.

Feel free to try any fandom you have reason to think I know, but if I don't at all know the fandom I'll have to say so.