Aired
October 18, 2007
Stargate Atlantis
Stargate Atlantis
Doppelganger #S04E04
During an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.
Episode 4 of Season 4 from Stargate Atlantis — available to stream in HD on any device.
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