Here's a look at Nina and Peter working together. They have a great deal to solve on season three.
Walter finds himself in a tough situation on the installment "Do Shapeshifters Dream of Electric Sheep?" He tries to explain it here.
Circumstances at Massive Dynamic lie at the heart of this gathering. The scene is courtesy of the episode "Do Shapeshifters Dream of Electric Sheep?"

Fringe Season 3 Episode 4 Quotes

Newton: You're going to have a very difficult time without me, you know.
Bolivia: Well, there are plenty of machines here. I can befriend a vacuum cleaner.

Nina: He's a bit unorthodox.
Peter: He's also tripping his brains out right now. You know that right?
Nina: Huh?