IGN - Sometimes if you want to go forward, you've got to take a few steps back first. That's one of the themes of this episode, as it goes back to Fringe's past to show its future.
The episode starts with a dream sequence that reminds us how things used to be with Peter and Olivia. Although it's only a dream, and we all saw that coming, the best aspect of this episode is the fact that things are indeed almost like they used to be. Peter is out in the field again, using that big brain of his to save the day, and I'm once again reminded of how much the show suffered without Joshua Jackson in the picture.