Where To Stream Stargate Atlantis Season 4 Episode 4
Doppelganger
- Aired October 19, 2007
- 60 Min
- Rated 6.9
- Number 90 Of 100 Rated Episodes
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.