Griffin believes no man is a complete mystery but him but there was this episode I watched and the killer had the guts to tell him he had nothing do u think he's really a mystery after all

Actually I don't find so. He's pretty easy to read. You can tell that he really dosen't like it when a killer takes a step forward before him and if he thinks he's not goog enough he'll blame himself, but he's wrong. No man can save everyone from who they are, or what they are. :p