To Kill a Killer (BL)

If you kill a killer there's still the same amount of killers in the world. So why not kill two, or perhaps even more. Heck, why not entirely. My name is Peter Hale, well it used to be but that's not the point. I was murdered by one of my previous worlds most notorious serial Killers, and now I'm going to kill every last killer in my new world, so that they don't have to know the suffering that I did. Nothing can stop me.