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When the passengers on a commuter train all die instantly of massive power loss, the team realizes that a time traveler is responsible... and that it may be impossible to apprehend him. Meanwhile, Walter writes a letter to Peter explaining his origins.
First Air Date : Sep 09, 2008
Last Air date : Jan 18, 2013
Episode : 100 Episode
Season : 5 Season
Runtime: 26:14 minutes
Studio: FOX
Country: United States of America
