Stargate: Atlantis (2004–2009)
3 user

Ghost in the Machine 

A group of beings stranded in sub-space seek help from Atlantis to return to normal space. But their outrageous claims and erratic behavior strains the trust of their benefactors and forces a painful solution.


Ken Girotti


Brad Wright (created by), Robert C. Cooper (created by) | 3 more credits »

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Episode complete credited cast:
Joe Flanigan ... Lt. Colonel John Sheppard
Rachel Luttrell ... Teyla Emmagan
Jason Momoa ... Ronon Dex
Jewel Staite ... Dr. Jennifer Keller (credit only)
Robert Picardo ... Richard Woolsey
David Hewlett ... Dr. Rodney McKay
David Nykl ... Dr. Radek Zelenka
Michelle Morgan ... Dr. Elizabeth Weir
Robert Moloney ... Koracen
Leanne Adachi Leanne Adachi ... Lia
Chuck Campbell ... Chuck the Technician
Richard Busch Richard Busch ... Marine
Torri Higginson ... Dr. Elizabeth Weir (archive footage)
David Ogden Stiers ... Oberoth (archive footage)
Patricia Cullen ... Replicator Crew Member (archive footage)


Returning from an off-world mission in a puddle jumper, Sheppard, Teyla, Ronan and McKay suddenly find themselves in a ship that swings wildly between complete power failure and power surges that are blowing out some of the ship's systems. When they manage to get back to Atlantis, a diagnostics check reveals no problem whatsoever with the jumper. Soon however, systems across the city are affected in the same way. McKay is having difficulty isolating the source but it finds him by shutting down all but his computer. When he finally manages to communicate with it, he and everyone else is in shock at who it claims to be. Written by garykmcd

Plot Summary | Plot Synopsis


TV-PG | See all certifications »


Release Date:

15 August 2008 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

DTS (5.1 surround)| Dolby Digital (Dolby 5.1)



Aspect Ratio:

16 : 9
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Did You Know?


[All trivia items for this title are spoilers.] See more »


Features Stargate: Atlantis: Lifeline (2007) See more »


Main Title
Composed by Joel Goldsmith
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User Reviews

One of only 2 good episodes in seasons 4 and 5
11 May 2018 | by tomasajdariSee all my reviews

This episode goes back to SG-1-like quality and offers a powerful emotional and character driven story. The CGI shots at the beggining and in the middle are quite good (for that era).

The actress playing FRAN/Weir is beautiful, which is a major +

One wonders why the rest of the last 2 seasons wasn't anywhere near close to this episode.

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