I'm not good with episode titles, but the one with the demon named Seth, that was freaky as hell. And the Apartment episode, with the little boy ghost that is actually a demon. I have lived in apartments all my life, and never heard of haunted apartment. This show made me afraid to live in a house, and if I ever do, I have got to do some fact checking.
Actually, this show has taught me something: If I ever find a house that seems gorgeous, but it seems really reasonable and affordable, there is a catch. Or if it has been empty for years, there's a catch.
And of course, if ya ever enter a house, and all the furniture is there, and it appears as if the prior occupants just got up and left, there's a reason, and get the hell out.