Stargate Atlantis

Season 5 Episode 20

Enemy at the Gate

Aired Friday 10:00 PM Jan 09, 2009 on Syfy



  • Trivia

    • In the previous episode, it was shown that in the alternate reality the Ancient Chair from the Antarctic outpost had been moved to Area 51. This information was included in the sub-space message by the stranded Wraith, which is why the Wraith target it in this reality. Unfortunately in this reality it has also been moved to Area 51 just one month earlier. It was moved due to it being in violation of the non-proliferation arms act of the Antarctic.