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In attempt to recall a plan to defeat the Observers, Walter takes an LSD trip down memory lane. Meanwhile, Peter and Olivia trace a mysterious signal to the woods, where they come upon a grisly scene.
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
