The twist involving the girl being Peter and Olivia's daughter was utterly predictable. I saw that coming a mile away. But that didn't make the final scene any less moving.
Last week's episode will go down as one of my favorite episodes of the show and now if the show doesn't get renewed, I'll be PISSED! I love what next year's story line will be: the fringe team vs the observers! It's going to be EPIC!
The episode was a nice tease for next season (if there is a next season) leaving us with several dangling questions: what happened to Olivia? Apparently William Bell did something to her, what was it? And finally: how the hell is William Bell even alive to begin with?!!