Peter gets help from Martha Plimpton in this photo from the episode "Northwest Passage." The hour focuses on Peter's search for clues about his past.
Peter looks for clues about his past on the episode "Northwest Passage." Season two of Fringe is inching toward its conclusion.
Martha Plimpton is seen here in her guest-starring stint on Fringe. She appears on the 5/6/10 episode of the show.

Fringe Season 2 Episode 20 Quotes

I don't know who I am anymore.


Peter: I'm sorry. I needed to know your blood was still red.
Mathis: What other color would it be?