Using her FBI training, Olivia escapes from Robert Jones' people. An FBI agent from Olivia's past is set to investigate the motifs and actions of the Fringe division. Olivia retrieves a sample from her abductors that contains the same parasite that is used to kill an immunologist. At the federal HQ, Loeb interferes with the investigation and finally Olivia figures out he's the other mole. Loeb instructs his wife to kill Olivia but Peter, who overhears the conversation, warns Olivia. Loeb is then caught by the team. Written by
Did You Know?
"The Observer" can be seen walking at the entrance of Harvard University while Olivia picks up Peter and Walter Bishop. See more
Throughout the episode, the "common cold virus" is repeatedly described as a single-cell organism. Viruses, in fact, have no cells. See more
The opening titles don't run until over a quarter of an hour into the episode. See more
End Title Theme (Composed by Michael Giacchino)
Written by Michael Giacchino See more