On the way home from a joyless Nightmare Night party, Twilight finds an old, abandoned covered wagon on the side of the road. A mysterious entity hiding inside begs her for a favor. Giving into her generous nature, she reluctantly agrees. However, she may find that this one good deed may be her last...
(3rd place winner of Equestria Daily's 2012 Nightmare Night horror fanfic contest; links to other finalist's stories included in "Author's Notes and Other Scary Tales")