Season 4, Episode 4 Doppelganger
First Aired: October 19, 2007
While exploring a jungle planet, Lt. Col. Sheppard comes into contact with a crystalline growth that turns him into a host for an infectious alien life form.
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- Premiered: July 16, 2004
- Rating: TV-PG
- Premise: A team of explorers journeys to the mythical lost city, which was transported from Antarctica to the Pegasus galaxy by the mysterious Ancients millions of years ago, in this spin off created by 'Stargate SG-1' scribes. The mission uncovers astounding techn… (more)
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