Synopsis:
Olivia manages to escape her abductors. Indications of a much bigger threat begin to present themselves when some samples she stole from her captors directly connect with the murder of an epidemiologist. One of Olivia's former adversaries is called in by Internal Affairs to conduct a review of the Fringe Division. Also, Olivia's sister, Rachel, pays a visit with her daughter. Olivia, Walter and Peter race to solve the murder of the epidemiologist, before an epidemic is unleashed. Olivia's investigation into her abduction and the scientist connect lead to straight to Agent Loeb and his wife, resulting in her death and his confession to the murders. But he leaves more unanswered questions about the bigger picture.
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