McKay, Sheppard, Beckett and Weir are on the Daedalus. McKay finds a Wraith virus that is infecting ship systems and sending a signal to the Wraith.



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Episode cast overview, first billed only:
Lt. Aiden Ford (as Rainbow Sun Francks) (credit only)
Hermiod (voice)
Bridge Lieutenant


Two months after the siege of Atlantis, several members of the expedition had been to Earth and come back to the Pegasus Galaxy aboard the Daedalus. That boring travel becomes dangerous when Rodney McKay discovers a Wraith computer virus is trying to kill them and get control of the ship. Written by Anonymous

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Release Date:

22 July 2005 (USA)  »

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Sound Mix:

(Dolby 5.1)| (5.1 surround)


Aspect Ratio:

16:9 HD
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Did You Know?


After Lt. Col. John Sheppard says, "Is he supposed to be naked like that?", Hermiod says something in his native tongue. When played backwards, Hermiod says "These humans are infants." Later, after Col. Steven Caldwell says that they are still on course for the coronasphere, Hermiod says, "The incompetence of these humans is beginning to make me angry." See more »


When talking about the candidates to join the Atlantis team, Dr Beckett describes one of them as a graduate of "John Hopkins". The University's name is Johns Hopkins. See more »


Hermiod: What are you doing?
Dr. Rodney McKay: I'm just checking something; I'm sure it is impossible...
Dr. Rodney McKay: Crap.
Hermiod: What did you do?
Dr. Rodney McKay: I just ran it through a translation program. It's Wraith.
Hermiod: Crap indeed.
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References Top Gun (1986) See more »


Main Title
Composed by Joel Goldsmith
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User Reviews

Pegasus reloaded
27 July 2011 | by (France) – See all my reviews

Even though The Siege:3 was officially the first episode of Season 2, there is no doubt that Intruder really counts as its real beginning. It starts a few months after the events in the Siege, just as it would after summer recess, and we learn about what happened back on Earth through several flashbacks.

Honestly, after everything that happened in The Siege, the main plot line, involving a killer IA that somehow got into the Daedalus's systems, seems rather dull. As Rodney points out, we've already had that (several times!) on SG-1 -and really, most of what happens is rather predictable. Still, the action is well-paced, smart and doesn't allow for loose ends. Besides, we don't spend that much time dealing with it. Intruder rather is an opportunity to get reacquainted with the characters, their quirks, their relationships and their evolution. Rodney and John are great, both individually and as a team; Weir once again shows her qualities as a leader and even gets a few minutes for womanly emotions (poor Weir). As for Teyla, although she's sadly absent from most of the episode, we understand that *she* was left in charge on Atlantis, which is rather neat considering she's an alien. Even Ford, though still AWOL, is very much present in everybody's mind. Finally, we meet Col. Caldwell and the Daedalus.

Now I must say that I was initially dismayed that the long-awaited return to Earth should be completely left out of the episode. Clearly, this is intentional: the team's "home" is on Atlantis now, so it's only fitting that this "Atlantis" episode should begin once the ship reaches the Pegasus Galaxy --while the Milky Way is only seen through hazy memories. And I also like that the flashbacks let us guess at the character's feelings instead of going for drama, as they might have.

Finally, I really love all the little moments and details that really define a good Stargate episode: Hermiod's difficult interaction with humans is just hilarious; Rodney's antics are always funny and never over-the-top; and did you notice that every single one of those F302 is customised with assorted stuffed toys and whatnot? To me, this is exactly the kind of silly little additions that give life to a show.

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