Season three of Stargate SG-1 began airing on June 25, 1999 on Showtime and concluded after 22 episodes. The third season concluded after 22 episodes on March 8, 2000 on British Sky One, which overtook Showtime in mid-season.

Broadcast Episodes

Image Title Number Airdate Planet(s) Race(s) Enemies
Into the Fire "Into the Fire (Part 2 of 2)" 301 June 25, 1999 Chulak, Earth, Eskal Goa'uld, Jaffa, Tok'ra Hathor, Trofsky
While Captain Samantha Carter and Dr. Daniel Jackson try to escape from Eskal, Colonel Jack O'Neill is implanted with a Goa'uld. Teal'c, who left Stargate Command, seeks help on Chulak to assist SG-1. There he has an unexpected volunteer, Major General George S. Hammond.
Seth "Seth" 302 July 2, 1999 Earth Goa'uld, Tok'ra Setesh
Jacob Carter/Selmak comes to Earth and tells SG-1 that a Goa'uld named Setesh is hiding on Earth. Dr. Daniel Jackson tracks down several cults involving Seth to Washington state; however, the ATF also has an interest in stopping the cult leader.
Fair Game "Fair Game" 303 July 9, 1999 Earth Asgard, Goa'uld Nirrti
Just after Samantha Carter receives a promotion to Major, Colonel Jack O'Neill is beamed out of the middle of the ceremony and aboard a ship belonging to Thor of the Asgard. Thor tells him that he will host a negotiation between the Tau'ri and System Lords Cronus, Nirrti and Yu. However, one of them does not wish to negotiate.
Legacy "Legacy" 304 July 16, 1999 Earth, PY3-948 Goa'uld Goa'uld killing organism
Dr. Daniel Jackson has hallucinations and is soon diagnosed with schizophrenia, possibly due to excessive Stargate travel. It is not, however, schizophrenia but a Goa'uld killing device belonging to the late Ma'chello, which eventually transmits itself to Teal'c.
Learning Curve "Learning Curve" 305 July 23, 1999 Earth, Orban Orbanian N/A
SG-1 is impressed with the learning power of Orbanian children but soon learns that the children eventually go through a ceremony which removes the nanites from the children in order to take away what they learned. Colonel Jack O'Neill decides to take Merrin away from them and teach her how to become a true kid.
Point of View "Point of View" 306 July 30, 1999 Earth Asgard, Goa'uld, Jaffa Apophis (alternate reality)
Dr. Samantha Carter and Major Charles Kawalsky from an alternate reality use their Quantum Mirror to get to our universe in order to escape their Earth being enslaved by the Goa'uld. SG-1 decides to help them take back what they lost by contacting the Asgard for help.
Deadman Switch "Deadman Switch" 307 August 6, 1999 PJ6-877 Ilempiri, Tok'ra Aris Boch
SG-1 is captured by Aris Boch, a bounty hunter working for Sokar, who proves to be almost impossible to escape from. He forces them to help him capture an alleged Goa'uld hiding on the planet, but SG-1 soon discovers they are about to capture a Tok'ra.
Demons "Demons" 308 August 13, 1999 Medieval planet Goa'uld, Medieval villagers, Unas Unas
SG-1 arrives on a Medieval planet where the Christian inhabitants believe SG-1 to be "demons" because they arrived through the Stargate. Teal'c is accused of witchcraft by the village Canon.
Rules of Engagement "Rules of Engagement" 309 August 20, 1999 Apophis' training planet, Earth Goa'uld, Jaffa SG-X
SG-1's efforts to retrieve SG-11 thought to be MIA gets them stunned and captured. They work out that the "SG team" is actually made of slaves who work for Apophis to invade Earth. SG-1 must convince them that Apophis is dead and to stop them from carrying out their mission.
Forever in a Day "Forever in a Day" 310 October 8, 1999 Earth, P8X-873, Unnamed Abydonian, Goa'uld, Jaffa Amaunet
The Abydonians are kidnapped and sent to P8X-873, which is controlled by Amaunet. As several SG teams rescue the Abydonians, Dr. Daniel Jackson tries to get to Amaunet and save Sha're.
Past and Present "Past and Present" 311 October 15, 1999 Earth, Vyus Vyan Ke'ra
SG-1 arrives on the planet Vyus and finds the inhabitants have all lost their memories after a disaster they refer to as the Vorlix. After the team begins investigating the records from prior to the Vorlix, they soon discover that the culprit is someone they had dealings with before.
Jolinar's Memories "Jolinar's Memories (Part 1 of 2)" 312 October 22, 1999 Delmak, Earth, Netu, Vorash Goa'uld, Jaffa, Tok'ra Bynarr, Sokar
Martouf tells Major Samantha Carter that her father Jacob Carter has captured by Sokar and sent to "hell", which is actually a prison moon Netu terraformed to make it resemble hell. Carter and the rest of her team plan a rescue but are later captured themselves.
The Devil You Know "The Devil You Know (Part 2 of 2)" 313 October 29, 1999 Delmak, Earth, Netu, Vorash Goa'uld, Jaffa, Tok'ra Apophis, Sokar
SG-1 discovers that Apophis is a prisoner on Netu and is planning a revolt against Sokar. Meanwhile, Teal'c goes to Vorash to seek assistance from the Tok'ra, but they have plans other than rescuing the teams to stop Apophis.
Foothold "Foothold" 314 November 5, 1999 Earth Stragoth Stragoth
Little does SG-1 know, mysterious aliens have taken control of Stargate Command and are impersonating its personnel. Teal'c and Major Samantha Carter notice and escape. While Teal'c tries to stop them, Carter reluctantly seeks help from the NID.
Pretense "Pretense" 315 January 19, 2000 Earth, Tollana Abydonian, Goa'uld, Jaffa, Nox, Tok'ra, Tollan Zipacna
The Tollans ask for SG-1's help when Klorel crashes on their new homeplanet, Tollana. They need SG-1 to help assign Skaara/Klorel's fate. They must perform the triad, where they argue against the Nox and Zipacna of the Goa'uld. Meanwhile, Teal'c and Major Samantha Carter believe that Zipacna is using the triad to distract them whilst his Jaffa work on crippling the Tollan defenses to enslave Tollana.
Urgo "Urgo" 316 January 26, 2000 Earth, P4X-884 Togar's people N/A
SG-1 explore P4X-884, believing it to be a paradise world. However, after several hours, they return with no memory whatsoever about what has happened. They soon discover a computer simulation named Urgo trying to influence the team. After they find him annoying, they attempt to stop him but find it very difficult to do so with Urgo doing everything he can to distract them.
A Hundred Days "A Hundred Days" 317 February 2, 2000 Earth, Edora Edoran N/A
On Edora, SG-1 convinces the peaceful natives that every one hundred and fifty years the annual fire rain would have a devastating impact on the planet. However, during the evacuation process, an asteroid supposedly destroys the gate leaving Colonel Jack O'Neill and a few Edorans stranded. Meanwhile, the rest of the team on Earth spends a hundred days trying to reach them again.
Shades of Grey "Shades of Grey" 318 February 9, 2000 Arbella, Earth, Edora, PX3-595, Tollana, Unnamed Asgard, Tiernod, Tollan Harold Maybourne, NID
An angered Colonel Jack O'Neill steals a piece of technology from the Tollans after they refuse to give some away to the Tau'ri. Major General George S. Hammond later finds out about this and O'Neill soon resigns. During his retirement he is approached by Colonel Harold Maybourne of the NID with the purpose of recruiting him to work for the NID and steal technology from other worlds.
New Ground "New Ground" 319 February 16, 2000 Earth, P2X-416 Bedrosian, Optrican Bedrosians
The Bedrosian military are convinced that SG-1 are working for their enemy, the Optricans. While imprisoned, Teal'c evades capture but is blinded. He relies on a Bedrosian archaeologist to help free the rest of his team.
Maternal Instinct "Maternal Instinct" 320 February 25, 2000 Earth, Kheb Ancient, Jaffa Jaffa
Apophis has taken control of Sokar's forces and is racing the Tau'ri to search for the Harcesis, a child with all the knowledge of the Goa'uld, on Kheb. SG-1 gets there first, but it is only a matter of time before the enemy catch up to them.
Crystal Skull "Crystal Skull" 321 March 3, 2000 Earth, P7X-377 Omeyocan N/A
Dr. Daniel Jackson stares down at a crystal skull; however, he mysteriously disappears. Jackson tries his best to communicate with the rest of the team even though he can't be seen. SG-1 get his grandfather, Dr. Nicholas Ballard, to help, since he claimed to have experienced the same thing three decades earlier. Unfortunately, Nicholas Ballard happens to be in a psychiatric institution.
Nemesis "Nemesis (Part 1 of 2)" 322 March 8, 2000 Earth Asgard, Replicator Replicators
Thor's ship is above Earth and is overrun with an Asgard's nemesis that is even more powerful than the Goa'uld: the Replicators. Colonel Jack O'Neill and SG-1 are beamed aboard to find out a way to stop them before they can infest Earth.


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