Watch Stargate SG-1 Season 5 Episode 20: The Sentinel Online

	IMDB Rating: 7.2/10 from 370 votes
	Release: 2002 / Stargate SG-1 / Season 5 / Episode 20
	Genre: Action \| Adventure \| Sci-Fi
	Director: Peter DeLuise
	Stars: Richard Dean Anderson, Michael Shanks, Amanda Tapping
	Synopsis: SG-1 is sent to planet Latona, which is under attack from Goa'uld system lord Svarog because its Ancient defense system, the Sentinel, stopped working after Maybourn's rogue NID team secretly assembled and reassembled it. Colonel Sean Grieves and his rude assistant, lieutenant Kershaw, are taken from death row to join the rescue mission to repair it and/or evacuate the Latonians. Planetary leader Marul refuses to accept facts, despite the rule of terror already being installed by a Jaffa battalion, even when Svarog's starship arrives and Jack insists it's time to leave with or without the Latonians, claiming the Guardian must be alive and alert as a flame signifies. When Sam joins the repair team, which Daniel helped pass the ingenious protection field, the gruesome story of how the NID thieves got to it the first time proves crucial.

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