Season 3, Episode 20 6: 02 AM EST

First Aired: April 22, 2011

Walternate's thirst for revenge drives him to cause trouble in the other universe.

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  • Premiered: September 9, 2008
  • Rating: TV-14
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  • Premise: The passengers aboard Flight627 have died under mysterious circumstances. As FBI begins investigations, they soon realise that this was only the beginning of a greater calamity. (more)

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