When earthquakes happen in several locations at the same time in both universes, the Fringe Division is sure that David Robert Jones is the responsible for the events. Walter explains that Jones is trying to synchronize both universes to destroy them both. Soon they discover that the criminal is using the former Cortexiphan children to achieve his intent. The Fringe Divisions of both universes that if they do not stop Jones they will need to shut-down the former Doomsday Machine and close the bridge, separating both universes. Further, Walter is worried about what might happen to Peter.
"Worlds Apart" is an episode with the farewell to the parallel universe with the bridge disappearing after shutting down the machine. Fortunately nothing happens to Peter and Agent Lincoln Lee prefers to stay in the parallel universe. The motivation for them have a name: Olivia. My vote is eight.
Title (Brazil): "Worlds Apart"
"Worlds Apart" is an episode with the farewell to the parallel universe with the bridge disappearing after shutting down the machine. Fortunately nothing happens to Peter and Agent Lincoln Lee prefers to stay in the parallel universe. The motivation for them have a name: Olivia. My vote is eight.
Title (Brazil): "Worlds Apart"