In the season 3 opener of Fringe, Olivia looks shocked during a therapy session at the division’s facility on Liberty Island. She explains to Dr. Anderson that she comes from another universe and that this is not her home.
Dr. Anderson thinks Olivia is Bolivia- since they are on the other side. She thinks Olivia’s mind created this fantasy to process the trauma she’s suffered. While under anesthesia, she mumbles Peter’s name, when they ask about it, she explains that her and her team came over the bring him back, but they left her behind.
Meanwhile, Walternate watches video of this session and tells a doctor to continue the sessions, even if it kills her. A soldier escorts Olivia to her “treatment,” which involves injecting the “B-lymphocytes” of Bolivia into Olivia. She fakes a bad reaction, escapes and jumps into New York harbor.
A cab driver, Henry, gives Olivia some new clothes and she realizes she has Bolivia’s tattoo. He drives her to the Brooklyn opera house where her team crossed over and she plans to use the weak spot to get home but when she heads inside, a cop stops her.
She asks Henry to take her to 655 18th St., the address of Massive Dynamic but he’s never heard of it because it doesn’t exist.