I'm trying to come up with an idea for a ghost story, haunting, or a type of creature that the heros of my story could face/ investigate/ and deal with. It will be the main problem or issue of the story that they are dealing with throughout the entire story. Kind of like how in shows like supernatural they have the small side stories that they deal with and then the one big season long foe that they are fighting. This is my season long foe lol. Any thoughts or ideas on this would be greatly appreciated.