"Most things that can possess a person where I come from don't learn from their host, they take from them, because what they want, they need form to achieve." He takes in a very slow, measured breath, "Ghosts in particular are rather dangerous in that sense, because what they are is pure energy created by a memory of a feeling, or feelings. A repeating thought of what they need to move on, usually gets twisted up into something awful, some kind of harm on the unfortunate bastard that stumbles into their territory."

He isn't done talking about John, his change, but he is offering a little more, the voice in his head that begs him to keep his mouth shut quieter for once. "You ever stumble upon a ghost like that in your travels, Arthur? Or are they not the same."