Using Henry's blood, Walternate activates the doomsday machine to create consuming vortices in the prime universe, a prelude to its annihilation. In response, Peter accepts his apparent destiny and prepares to enter the doomsday machine - the only way where he might switch it off and save the prime universe - but encounters an unexpected reaction. Meanwhile, Fauxlivia turns rebel to retrieve Peter and possibly change Walternate's mind.
Did You Know?
Early in the episode when Olivia sees Walter naked, Walter says he plans to cook mushrooms for breakfast. This is... unfortuante innuendo. See more
Dr. Walter Bishop
I was never good at letting you go.
This time you have to.
Fringe Main Title Theme
Written by J.J. Abrams See more