Stargate: Atlantis (2004–2009)
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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.



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Episode complete credited cast:
... Lt. Colonel John Sheppard
... Teyla Emmagan
... Ronon Dex
... Dr. Jennifer Keller (credit only)
... Richard Woolsey
... Dr. Rodney McKay
... Dr. Radek Zelenka
... Dr. Elizabeth Weir
... Koracen
Leanne Adachi ... Lia
... Chuck the Technician
Richard Busch ... Marine
... Dr. Elizabeth Weir (archive footage)
... Oberoth (archive footage)
... 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)  »

Company Credits

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Technical Specs


Sound Mix:

(5.1 surround)| (Dolby 5.1)


Aspect Ratio:

16 : 9
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Did You Know?


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


References The Wizard of Oz (1939) 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 See 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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