I just saw the first episode. The first episode's original airdate according to imdb was supposed to be Oct2 so I don't know if tomorrow's episode will be new or just the same one and this was an early preview.
Spoiler :
Anyway, looks like they're going for a serial killer, Edward James Olmos, who is pretty effectively creepy, and his protege. I wonder how they met since they don't seem to be related, one is Latino and the other looks Anglo. And full of religious symbolism this time. Pretty nasty with the snakes sewed up in the stomach. I wonder what happened to the Irish babysitter too, since we now have Angel's sister watching Harrison. I have a feeling she might get suspicious about things too but that's what I thought with the last season.