There were many indications that this was going to be the beginning of a three-episode finale arc, and sure enough, this definitely felt like the introductory chapter of such an event. In essence, the previous episode was the prelude to what is happening here, and there are plenty of little twists and turns that change the rules of the game.
The review for Fringe 3.20: “6:02 AM EST” has been added to the archive.