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Stargate SG-1 Season 4

Stargate SG-1

Season 4

June 30, 2000 22 episodes

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.

All Episodes

Small Victories (2)
E1
Guide

E1. Small Victories (2)

44m 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.

The Other Side
E2
Guide

E2. The Other Side

44m Jul 7, 2000

A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.

Upgrades
E3
Guide

E3. Upgrades

44m Jul 14, 2000

A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.

Crossroads
E4
Guide

E4. Crossroads

44m Jul 21, 2000

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.

Divide and Conquer
E5
Guide

E5. Divide and Conquer

44m Jul 28, 2000

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.

Window of Opportunity
E6
Guide

E6. Window of Opportunity

44m Aug 4, 2000

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.

Watergate
E7
Guide

E7. Watergate

44m Aug 11, 2000

The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.

The First Ones
E8
Guide

E8. The First Ones

44m Aug 18, 2000

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.

Scorched Earth
E9
Guide

E9. Scorched Earth

44m Aug 25, 2000

SG-1 is caught in a conflict between two civilizations trying to colonize the same planet.

Beneath the Surface
E10
Guide

E10. Beneath the Surface

44m Sep 1, 2000

The members of SG-1 are used as forced labor in an underground alien facility after their memories are erased by the ruling elite.

Point of No Return
E11
Guide

E11. Point of No Return

44m Sep 8, 2000

SG-1 investigates a conspiracy theorist who has detailed knowledge of the Stargate program.

Tangent
E12
Guide

E12. Tangent

44m Sep 15, 2000

A test gone wrong leaves Jack and Teal'c marooned in space aboard a damaged prototype attack ship

The Curse
E13
Guide

E13. The Curse

44m Sep 22, 2000

When his former mentor dies, Dr. Jackson returns to his roots -- and discovers an ancient Egyptian artifact containing a Goa'uld parasite.

The Serpent's Venom
E14
Guide

E14. The Serpent's Venom

44m Sep 29, 2000

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.

Chain Reaction
E15
Guide

E15. Chain Reaction

44m Jan 5, 2001

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.

2010
E16
Guide

E16. 2010

44m Jan 12, 2001

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.

Absolute Power
E17
Guide

E17. Absolute Power

44m Jan 19, 2001

Jackson's teammates notice a disturbing change in him when he is reunited with the Harcesis child and given the Goa'uld genetic memory.

The Light
E18
Guide

E18. The Light

44m Jan 26, 2001

SG-1 finds a deserted Goa'uld palace, where a beautiful device causes suicidal tendencies.

Prodigy
E19
Guide

E19. Prodigy

44m Feb 2, 2001

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.

Entity
E20
Guide

E20. Entity

44m Feb 9, 2001

The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter.

Double Jeopardy
E21
Guide

E21. Double Jeopardy

44m Feb 16, 2001

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.

Exodus (1)
E22
Guide

E22. Exodus (1)

44m Feb 23, 2001

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 powerful fleet.

Other Seasons