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Stargate SG-1: Season 4

Poster for Stargate SG-1 Season 4

22 episodes · first aired Jun 30, 2000

O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion. A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.

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  1. 1 Small Victories (2) Jun 30, 2000 · 44m · TMDB 7.9 O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion.
  2. 2 The Other Side Jul 7, 2000 · 44m · TMDB 7.7 A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.
  3. 3 Upgrades Jul 14, 2000 · 44m · TMDB 8.5 A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.
  4. 4 Crossroads Jul 21, 2000 · 44m · TMDB 7.2 Teal'c is reunited with his lost love -- a woman who claims to have found a way to communicate with her symbiote and defeat the Goa'uld.
  5. 5 Divide and Conquer Jul 28, 2000 · 44m · TMDB 8.1 When a member of the SGC tries to kill a Tok'ra, it is revealed that O'Neill and Carter may be victims of an untraceable form of Goa'uld mind control.
  6. 6 Window of Opportunity Aug 4, 2000 · 44m · TMDB 9.2 O'Neill and Teal'c are caught in a time loop in the SGC, and must relive the same 10 hours over and over again.
  7. 7 Watergate Aug 11, 2000 · 44m · TMDB 7.4 The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.
  8. 8 The First Ones Aug 18, 2000 · 44m · TMDB 7.5 Dr. Jackson is taken captive by an Unas while on an archaeological dig. The SGC mounts a rescue operation, but discovers a danger of their own.
  9. 9 Scorched Earth Aug 25, 2000 · 44m · TMDB 7.3 SG-1 is caught in a conflict between two civilizations trying to colonize the same planet.
  10. 10 Beneath the Surface Sep 1, 2000 · 44m · TMDB 7.3 The members of SG-1 are used as forced labor in an underground alien facility after their memories are erased by the ruling elite.
  11. 11 Point of No Return Sep 8, 2000 · 44m · TMDB 6.9 SG-1 investigates a conspiracy theorist who has detailed knowledge of the Stargate program.
  12. 12 Tangent Sep 15, 2000 · 44m · TMDB 7.6 A test gone wrong leaves Jack and Teal'c marooned in space aboard a damaged prototype attack ship
  13. 13 The Curse Sep 22, 2000 · 44m · TMDB 7.3 When his former mentor dies, Dr. Jackson returns to his roots -- and discovers an ancient Egyptian artifact containing a Goa'uld parasite.
  14. 14 The Serpent's Venom Sep 29, 2000 · 44m · TMDB 7.5 SG-1 must stop Apophis and Heru-ur from forming an alliance of their powerful forces, while Teal'c is captured and tortured by the Goa'uld.
  15. 15 Chain Reaction Jan 5, 2001 · 44m · TMDB 8.0 SG-1 must adjust to a new commanding officer when General Hammond steps down -- but O'Neill discovers foul play behind the general's resignation.
  16. 16 2010 Jan 12, 2001 · 44m · TMDB 8.2 Ten years into the future, the former members of SG-1 must send a message into the past to prevent the extinction of the human race.
  17. 17 Absolute Power Jan 19, 2001 · 44m · TMDB 7.5 Jackson's teammates notice a disturbing change in him when he is reunited with the Harcesis child and given the Goa'uld genetic memory.
  18. 18 The Light Jan 26, 2001 · 44m · TMDB 7.0 SG-1 finds a deserted Goa'uld palace, where a beautiful device causes suicidal tendencies.
  19. 19 Prodigy Feb 2, 2001 · 44m · TMDB 7.2 Carter must help keep a promising young cadet from throwing away a future at the SGC. O'Neill and Teal'c encounter a dangerous life form at an offworld research base.
  20. 20 Entity Feb 9, 2001 · 44m · TMDB 6.9 The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter.
  21. 21 Double Jeopardy Feb 16, 2001 · 44m · TMDB 7.6 SG-1 must rescue an alien world from the Goa'uld -- with help from an unexpected source. Teal'c seeks revenge on the System Lord Cronus for the murder of his father.
  22. 22 Exodus (1) Feb 23, 2001 · 44m · TMDB 8.1 SG-1 helps to evacuate the Tok'ra to a new base -- but matters are complicated when a spy reveals their location to Apophis. The team attempts a daring plan to take out the Goa'uld's…