Stargate Atlantis Season 4 Episode 4 - Doppelganger

Airdate: 2007-Oct-19

Episode summary:

During an exploratory walk on a jungle planet, Lt. Col. Sheppard touches a glowing crystalline growth and unwittingly becomes host to an infectious energy form.

About Stargate Atlantis series:

Atlantis, built thousands of years ago by the highly evolved Ancients, is home base for an elite expedition from Earth. These courageous military c...Show more >