I had a real hard time following season #1 so I think I'm going to back track after this season and go backwards from this season since the story lines are different. I have watched all but the last episode of this season and have like it very much.
I suggest going back and starting at Season One. Most of the actors have carried through to the next season, and there on. Interesting how it folds out. Former actors are possibly due back this season. I could name a couple, but I don't want to spoil it for you.