Emergence of the Ghouls

Ghouls. They were a dangerous existance to humans as well as all of the three factions. Ghouls were able to adept, and kill. They possess a specific organs in their body that is able to counter anything and the Ghouls were thought to be almost extinct by the three factions. But little did they know. The Ghouls are back and they're about to cause a storm in the Supernatural world.