I don't get the serial killer thing. I think that's an association from the web minigame thing, nothing in the PFH said serial killer
The Minigame is the dark urge's backstory in the city.
Did they say that at the PFH? I missed it if they did
No, but this thread isn't about things that were in the PFH.
Edit: i might have missunderstood your question. But no it was not in the PFH, it was just the minigame which served as an animated prequel to the backstory of this serialkiller entity.