The Last Man
Stargate Atlantis: Season 4, Episode 20
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Having failed to locate Teyla, Sheppard returns to Atlantis, only to find the city abandoned and all systems dead. What's going on?
Show: Stargate Atlantis
Writers: Joseph Mallozzi and Paul Mullie
Episode number: 20
Season number: 4
Air date: March 7, 2008