I don't want to say yes or no to your theory about Bob. All I can say, very truthfully, is that it's a little bit more complicated than that.
Great, then I haven't spoiled it all.
You know, I heard that the Season 2 is not the same to the first one, as Lynch was pressured by the network to reveal the killer, it somewhat drifted away from its original course and so on. According to my mother (who to my surprise watched the show when it was aired back in the 90s) it was still pretty good.
Wouldn't watching "Fire Walk With Me"
(If I, for some strange reason, manage to get it) be a huge spoiler?
This is probably one of the few TV shows which I actually found interesting (Cowboy Bebop
still tops my list; you should watch it one day, I'm sure you'd like it).