Walter visits Olivia. Having a cup of tea together, Walter starts explaining to her how Peter is not really from our world. In the '80s Walter, who was a different man back then, built a device through which he could see the other Universe so, practically, a window to the other Universe. After Peter's death he wanted to do more than just observe; he felt it was his job as a father to do so. Because of September, Walternate couldn't figure out the right compound for the cure to save Peter's life so Walter decided to cross the worlds in order to save the other Peter. This, however, created a wormwhole into the alternate Universe that has had devastating consequences.
Did You Know?
On the DVD commentary, Blair Brown says that to create her "1985" hairstyle for the flashback scenes, she brought in to the hairstylists some pictures of herself from Continental Divide
(1981), and the hairstyle she had in that actual 1980s movie is the model they used to cut the wig for younger Nina's hair. See more
Dr. Walter Bishop
He's just like me. I wouldn't look back, and neither will he.
The episode's opening titles have been redone as though it were a show from 1985, complete with an '80s version of the theme tune and decade-specific fringe science topics such as "stealth technology", "virtual reality", and "in-vitro fertilization". See more
End Title Theme
Written by Michael Giacchino See more