Connor
Connor, I don't even remember the last time I worked a case that involved normal, human killers with normal, human motives. I've been hunting monsters since I was a rookie cop, and I haven't been a rookie in a damned long time.
Just try not to push yourselves too hard and end up making things worse. I'll bring some of my notes for the two of you to study in your down time. You can't just wipe out one group of evil unless you're prepared to deal with the power vacuum that it creates, and all the other nasties that will try to rise up in their place.