EP 404A - Doppelganger
Season 4 Episode 4
|Original Air Date:||October 19, 2007|
|Written By||Robert C. Cooper|
|Directed By:||Robert C. Cooper|
While Lt. Col. Sheppard and the team are out exploring a jungle planet, they discover a glowing crystalline growth. Compelled to touch the strange crystal, Sheppard becomes host to an alien entity. Once on Atlantis, the entity begins to move from person to person through the power of touch.
Teyla is the first to experience a nightmare involving Sheppard. The chain reaction continues when she infects Dr. Keller, who succumbs to a different but equally terrifying dream. When Lorne (Kavan Smith) appears to have a psychotic breakdown, the team urgently attempts to trace the problem to its source.
When Rodney McKay becomes the latest host, the team links Sheppard to McKay's brain, where Sheppard ultimately faces off against the malevolent entity that has assumed his form.
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