Throughout season one, Joe seems like a genuinely good guy when he's around Paco. He really cares for the kid and even kills Paco's abusive father to protect him. Paco trusts Joe so much that he doesn't even help Beck when she is trapped in the basement. It's eerie that he knows Joe has killed two people, and maybe season two will show us the emotional impact this has on him. Then again, the season two trailer shows Joe moving to Los Angeles, so it's unlikely Paco will be a part of the new episodes.