Season 2 Episode 16
Runtime: 43 mins
Fringe S2 E16
Fringe Season 2 Episode 16
Walter visits and explains to Olivia how, in 1985, he invented a window-like device that allowed him to witness events in the parallel universe. A younger Walter observes that, in the alternate universe, the other Walter (whom he nicknames "Walternate") is working on a cure for the genetic condition that is killing young Peter in both universes. One evening, however, Peter dies in Walter's arms. After the funeral, Walter witnesses his alternate self successfully synthesizing the cure, but Walternate is distracted by an Observer and misses seeing the experimental result that confirms his success. Walter then decides to perfect the cure himself and administer it to the alternate Peter. Walter finishes the medicine and travels to Reiden Lake to open a portal. Nina Sharp, alerted by Walter's colleague, arrives and tries to stop him, fearing that breaking the barrier between the two universes will destroy both. In their struggle, Walter falls, but makes it through the portal; Nina grabs him as the portal closes, and her arm is damaged by the energy. Walter discovers that his fall broke the vial of medicine. He picks up Peter and returns to the other side to make more of the cure, but the frozen lake cracks beneath them and they fall through the ice. The Observer September saves them, explaining to Walter that Peter is important and must live. After curing Peter, Walter recants his original idea to return him because both he and Elizabeth, Peter's mother, do not wish to lose him again.
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