This episode follows Peter as he continues to stay away from Boston after learning his true parallel universe origins. His travels take him to a small town where he helps the local police investigate mysterious disappearances. Meanwhile, Walter copes with the possibility of being sent back to St. Claire's and someone from the "other side" pays a visit.
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This episode's glyphs spell:
Secretary Bishop/Walternate found Peter in an attempt to return him home to the Redverse.
The Observer can be seen standing in the crowd at the Hill-Top Cafe crime scene.
Walter's game of Operation in 'Brown Betty' foreshadows the makeshift medical procedures in 'Northwest Passage'.
Peter finds a bubble gum wrapper with a comic that says "You can't get there from here" in 'Northwest Passage', foreshadowing his visit to the alternate universe in 'Over There (Part 1)'
Peter stayed under false names related to Bishop (Stewart) and Gene (Gene Cowan) in "Northwest Passage", like the villain did in "The Equation".