"These days..." Dean trails off, thinking of Lenore and Gordon, how clear cut everything had been going in, how messy going out. "The last human I found killing indiscriminately, I put in jail. When he got out, my brother killed him."

Dean swallows. He's seen far worse since that day, but he can still remember his dread at the time, realizing Sammy had taken off Gordon's head with his own hands. "I've killed humans when I had to, but I don't like it, and I don't make a point of hunting them."