|"Ghost in the Machine"|
|An episode from Stargate Atlantis|
|Directed by||Ken Girotti|
|Written by||Carl Binder|
|Produced by||Andy Mikita|
|Original air date||
USA: August 15, 2008|
UK: September 17, 2008
|The city of Atlantis becomes host to the minds of disembodied Replicators, led by someone very close to the team.|
- Jewel Staite (Jennifer Keller) is credited but doesn't appear in this episode.
- Robert Moloney, Koracen's portrayer, has already played the character of Borren, one of the Ashen in the Stargate SG-1 episode "2001".
- This episode was supposed to see Torri Higginson back in her role of Elizabeth Weir, but for personnal reasons, Higginson declined the offer and the writers had to rewrite a different script to fit her response and called Michelle Morgan (FRAN) to take back the role of Weir.