While the body of a young, recently deceased girl is being harvested of its organs, she suddenly comes back to life yelling classified naval launch codes and Russian phrases, leading the Fringe Division to a recently murdered naval officer. While the girl's mind-bending condition intensifies, Walter dusts off some old lab videos and hypothesizes the unthinkable.
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Andrew Rusk, by way of Lisa Donovan, was on a mission of avenge his own murder.
The Observer can be seen walking behind Olivia as she speaks with Lisa Donavan's mother at the steps of the church.
A pirate flag (skull and crossbones) appears on a TV monitor in 'There's More Than One of Everything', a reference to the Shapeshifter ability to remodel his skull and bones in 'A New Day in the Old Town'.
A pirate flag (skull and crossbones) appears on a TV monitor in 'There's More Than One of Everything', a reference to the Shapeshifter ability to remodel his skull and bones in 'A New Day in the Old Town' (which was filmed directly after this episode).
This is similar to William Bell's 'Soul Magnets' experiment that was enacted in "Os".