I really enjoyed all the plots on this series. But having watched it all, I got the feeling they "dropped the ball" on the last episodes because they thought of "milking" a second season.
It was pretty good, but it lacked "closure". It feels like watching a really long good movie, but when they're about to reveal it all, you have to leave your seat and go to the restroom...
It will be a good series when it ends for good. I hope they don't play the "Lost" card and stretch the story so much beyond the initial concept that it looses its meaning.
I'll be checking season two out. I hope it's worth the while.