in my experience its really hard to find books about paranormal creatures that aren't romance or aimed at middle schoolers. hence: this challenge, where the goal is to share more obscure paranormal books!! 
what's accepted:
adult novels
'adult' novels
fiction and nonfiction 
plays, screenplays
multimedia works
anything and everything that centers around the paranormal creature of your choice <3
(romance and YA/MG novels are accepted as well; my main goal is just to help share and promote books belonging to an otherwise dying genre.)