Stargate SG-1

The Sentinel

Season 5, Ep 20, Aired 5/3/02
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  • Episode Description
  • SG-1 finds a world under siege by Lord Svarog's forces because the "Shades of Grey" NID team disabled the planet's defenses. SG-1 must work with the captured team members to restore them.

  • Cast & Crew
  • Richard Dean Anderson

    Colonel/Brigadier General Jonathan J. "Jack" O'Neill

  • Christopher Judge


  • Ron Wilkerson

  • Peter DeLuise

  • David Kopp

    Lt. Grogan

  • Fan Reviews (2)
  • ok episode...

    By Fwirrel, Aug 16, 2007

  • Correction of mistakes...

    By Parricida, Mar 28, 2008

  • Trivia & Quotes
  • Quotes (5)

    • Sam: Well, according to his report, the Latonans never granted Greaves' team access to the sentinel device... before they were recalled and arrested. Daniel: You don't think it's possible for an NID operative to lie? Teal'c: I believe it is, Daniel Jackson. Daniel: Right...

    • Jack: I need to know what you did to screw it [the sentinel] up, and what I need to do to fix it. Greaves: I'm more inclined to tell you where to shove it.

    • Daniel: Just out of curiosity, how many years did you take off their sentence if they managed to fix this? Jack: Actually, they'll get a few more years out of this. Daniel: More? Jack: They were on death row.

    • Greaves: I'll say this again. I don't like the thought of going into this unarmed. Jack: And.. I don't care. Kershaw: I feel better just knowing there's an archaeologist watching our back. Daniel: (holding a knife) Yeah, which end do the bullets go in again?

    • Sam: So how did you manage to find the Sentinel if the Latonans didn't want to show it to you? Kershaw: Maybe we're good? Jack: Bribed the locals, eh? Greaves: I see you've done your homework.

    Notes (5)

    • Gary Jones and Frank Cassini previously appeared in the 1995 TV-movie 'Bye Bye Birdie' together.

    • Henry Gibson previously worked with Richard Dean Anderson in the "MacGyver" episodes, "Harry's Will" and "Deadly Silents"

    • Syndication airdate: May 4, 2003.

    • This episode aired in syndication exactly 1 year and 1 day after it originally aired.

    • Aired 23rd January 2002 in the UK.

    Trivia (3)

    • Planet: P2A-018 (Latona)

    • At approximatly 15:05 into the episode when SG1 finds Lieutenant Grogan passed out, if you listen carefully (you might need headphones), you can hear what sounds like a dog bark several times.

    • Although Grogan is credited as a Lieutenant, he refers to himself as a Sergeant at the beginning of the episode.

    Allusions (1)

    • Title Throughout the series there have been a number of references to the works of science fiction writer Arthur C. Clarke,, most notably in episode #82, 4-16, 2010. The Sentinel is the title of Clarke's 1951 short story that eventually was expanded into the film 2001: A Space Odyssey. Both this episode and the short story involve a monitoring device of alien origin.

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