Can Olivia move between worlds? Walter confronts her with that question in this clip from Fringe. She then tries to take some pills to get rid of Peter... as a symptom.
Get a sneak peek at Fringe in this clip. It depicts Walter giving a speech, passionately explaining his beliefs in the mind and the brain. He also starts to take his pants off.
This is an early scene from the Fringe episode "The Plateau." In it, Secretary Bishop talks about the identity of Olivia and what they have to gain from this individual.
Check out this sneak peek at the Fringe season three premiere. It features Olivia in the alternate universe, repeatedly making her case and insisting: I'm not crazy.

Fringe Season 3 Quotes

I'm not crazy you know. To prove that to you I'd have to tell you some things that are even crazier.


Peter: The whole time I was in there, there was only one thing I could think about.
Bolivia: Yeah what? (Peter then kisses Bolivia)
Peter: That.