Fringe

Season 2, Episode 21

Episode Title: Northwest Passage

Air Date: 2010-05-06

Overview:

In Noyo County, Washington, Peter stumbles across a grisly murder with ties to Newton and First Wave. He is forced to team up with a suspicious sheriff to get to the heart of the case. Meanwhile, Walter has trouble functioning without Peter, and worries he will be sent back to the mental institute.