Write a story in which a group of characters is at a party) or some sort of gathering more fitting for your fandom/story) and, much like a mystery novel or a game of Clue, people start dying/disappearing.
All previous challenges are closed. This challenge will end September 27th.
By the way, there is a rather large change to madpash. Original stories are now allowed. However, this does not include self-inserts and Mary Sues in fan fiction posted here.