D&D 30 Day Challenge: Day 15 – My Favorite Undead Monster

I like ghost stories. I like it when the protagonists of the story must research the history of the ghost in order to lay it to rest. In my campaign, ghosts can be beaten in a fight (with magic weapons), but it will reappear the next night. The only way to get rid of a ghost is to find out what keeps it on the mortal plane.