B.P.R.D The Black Flame

A man who calls himself the black flame learns to teach obedience to the frogs ( a fictional species of monsters ). A women named Liz has re occurring nightmares and ends up coughing up the small piece of paper with strange writing on it when she talks to the doctor he says that it means The coming of a great monster named katha-hem. As all the frogs moved to one spot the dreams get worse and she realizes that there is information in each one so she falls asleep and in the dream she learns about a weapon and how to use it and with that knowledge she kills the monster.