Hey Kams, I hope what you said in the spoilers isn't true. Could be a bit much.
Anyway just finished Season 4. I thought it easily had the strongest of endings of all the seasons. I had a couple of issues with it, like how you could predict what was going to happen through some of the obvious changes in sub plots.
For example I could see Tony being taken hostage a mile away, when out of the blue Michelle and Tony suddenly realized they still had feelings for each other. Not minutes after they expressed that to each other, Jack suddenly had to replace a field operative and picked Tony. I literally laughed out loud, as I could pretty much tell they were raising the emotional stakes for a Tony kidnapping or something. I also think it is far more fun when there is one threat that creates tension rather than multiple threats.
But that is nitpicking, as far as I am concerned, the season rocked.
I'd say the first season was quite amazing followed by three and then four. Two was entertaining, but my least favorite.