X

Join or Sign In

Sign in to customize your TV listings

Continue with Facebook Continue with email

By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

Stargate SG-1 Season 4 Episodes

22 Episodes 2000 - 2001

Episode 1

Small Victories

Fri, Jun 30, 200044 mins

Jack's second attempt to take a fishing holiday is stopped again when the Pentagon sends USAF Major Paul Davis to call for SG-1's expert help after a Soviet submarine was invaded and its whole crew killed by the Replicators which survived the crash of Thor's spaceship and multiplied; Washington needs it handled discretely. At the same time, Thor, who is healed, arrives by stargate to ask for help in the Asgard war against the Replicators, which looks desperate, as they only learn from superior technology. Thor asks for 'dumber' help, as primitive means -like firearms- do work against them. Ironically, Sam is the one sent with Thor, who shows her the most advanced Asgard ship, their first special war design, called "The O'Neill." Jack and Teal'c go inside the Russian submarine with regular troops, finding a whole nest with the surviving "bugs" integrated into a queen. Recovering from surgery, Daniel stays above water with SGC, but proves valuable there, realizing the effect of rust on the new replicators. Sam is deliberately not told all the Asgard know, but concentrates on out-smarting the Replicators' way of thinking to devise a trap. But that trap comes at a price Thor is reluctant to pay: sacrificing The O'Neill without any guarantee of success.

Where to Watch
Stargate SG-1, Season 4 Episode 1 image

Episode 2

The Other Side

Fri, Jul 7, 200044 mins

After 3 'impact' events against the iris, the SGC is contacted by humans that are at war and under attack. They plead for help and SG1 visits them. They are technologically advanced, and living underground in bunkers with much of their population in stasis, protected by shields and remotely piloted aircraft. But all is not as it seems and Jackson asks questions that elicit disturbing answers.

Where to Watch
Stargate SG-1, Season 4 Episode 2 image

Episode 3

Upgrades

Fri, Jul 14, 200044 mins

The SGC is visited by a Tok'ra named Anise who brings some armbands used by the soldiers of a long extinct race, which are supposed to increase the abilities of the wearers. O'Neill, Carter and Jackson put the armbands on and it increases their physical strength, but it also causes them to make rash decisions. Can they get the armbands off before they cause their deaths?

Where to Watch
Stargate SG-1, Season 4 Episode 3 image

Episode 4

Crossroads

Fri, Jul 21, 200044 mins

An old love of Teal'c, Chulak Temple Priestess Shan'auc, arrives at the SGC saying she can communicate with her symbiont. Teal'c does not believe her until he tries and sees that it is true. They travel to the Tok'ra, as Shan'auc's symbiont needs to blend with a host, but isn't it really still a Goa'uld?

Where to Watch
Stargate SG-1, Season 4 Episode 4 image

Episode 5

Divide and Conquer

Fri, Jul 28, 200044 mins

When an SG-team member tries to assassinate the Tok'ra leader, it is believed that some of the SGC have been converted into Za'tarc - programmed assassins. The Tok'ra Freya comes to the SGC with Martouf to try and test all SG-team members. But the Za'tarc detector suggests that O'Neill and Carter are actually Za'tarcs. Is this correct and is there another Za'tarc at the SGC?

Where to Watch
Stargate SG-1, Season 4 Episode 5 image

Episode 6

Window of Opportunity

Fri, Aug 4, 200044 mins

Colonel Jack O'Neill and Teal'c have a recurring case of déja-vu, but it's much worse, they really recall what happened ten hours ago on SG-1's mission to a planet where a device at an altar near its Stargate throws them back in time, yet neither Daniel nor Sam recollect anything so the SGC refuses to believe them, they're tested, found medically okay, the general calls the mission off when Sam feels it might actually be some time-distortion, but that doesn't work. They learn to be more convincing, so they can go to the planet, but there a certain Malakai proves a problem. Their only hope is to help Daniel decipher the inscriptions on pictures of the altar over many, many time-loops, after Sam helps them make sense of what must be happening; meanwhile Daniel gives them the naughty idea they can get away with pretty much any pranking, as everything reverts to normal unharmed anyhow.

Where to Watch
Stargate SG-1, Season 4 Episode 6 image

Episode 7

Watergate

Fri, Aug 11, 200044 mins

When an attempt to dial out a wormhole fails, the SGC discovers that the Russians have a Stargate and that it won't shut down. Together with a Russian expert, SG1 parachutes onto the Russian base. They discover that the Stargate is the one lost on Thor's ship. Everyone on the base is dead, and some mysterious water taken from a water planet is missing. Three of the team travel to the Waterworld by mini-sub. Back on the base, O'Neill discovers a frozen Maybourne inside the freezer.

Where to Watch
Stargate SG-1, Season 4 Episode 7 image

Episode 8

The First Ones

Fri, Aug 18, 200044 mins

While on an archaeological dig at the original Goa'uld home world, Daniel is captured by a young Unas. He tries to communicate with it and slowly builds a rapport. Meanwhile, SG-1 comes to the planet to find Daniel and they soon realise that some of the SG-team members there may have been taken over by Goa'uld. Will they be able to discover which ones in time to rescue Daniel?

Where to Watch
Stargate SG-1, Season 4 Episode 8 image

Episode 9

Scorched Earth

Fri, Aug 25, 200044 mins

SG-1 are celebrating with the Enkarans that they settled on P5S-381, but they receive word that a huge spaceship has destroyed the nearby village and is slowly moving towards them, burning the ground as it goes. SG-1 tries to communicate with the ship and find out that it is 'terra-forming' the planet for a long-dead race. A bio-mechanical life form in the ship tells SG-1 that the Enkarans must leave. But they cannot, because they would die. Can SG-1 solve the problem in time?

Where to Watch
Stargate SG-1, Season 4 Episode 9 image

Episode 10

Beneath the Surface

Fri, Sep 1, 200044 mins

The SG-1 team awake to find they have lost their memories. They believe they are workers in an underground power station. They are told that they are helping to preserve life during an ice age. In truth, they are slave labor to a huge domed city above. When Teal'c starts to recover his memory and is given another amnesia treatment, he forgets his Kelno'reem and starts to die. Will the others recover their memories in time to save him?

Where to Watch
Stargate SG-1, Season 4 Episode 10 image

Episode 11

Point of No Return

Fri, Sep 8, 200044 mins

SGC is contacted by Martin Lloyd, a conspiracist who knows too much about the Stargate to be ignored, so how did he learn? When O'Neill meets him and fails to put him on the wrong track, Martin believes himself to be an alien and offers to show Jack his spaceship, but fails to find it. Martin knows about the Stargate; how does he have a gate address, and is he being drugged by others? Using police surveillance equipment, Daniel and Sam find Martin's home, inside they find psychiatric medication and a diary. Dr. Fraiser finds that his drugs, prescribed by psychiatrist Dr. Peter Tanner, were laced with unidentified chemicals which could possibly be the cause of his delusions. Martin finds Jack and Teal'c and demands to be 'returned home' through the Stargate, he even wrote down a seven-sign address from a vision. He finds the clearing where his ship is hidden, but says the craft is a mere pod - there must be a much larger ship. Meanwhile, Tanner, and two sinister operatives who refuse to identify themselves, capture Daniel and Sam, and threaten them with torture. Martin's memories start to fit a Goa'uld enslavement scenario. Tanner's trio then captures Martin; and Jack and Teal'c tail them, but more surprises await.

Where to Watch
Stargate SG-1, Season 4 Episode 11 image

Episode 12

Tangent

Fri, Sep 15, 200044 mins

O'Neill and Teal'c test-fly the experimental spaceship X301, created from two captured Death Gliders. While they attempt a test run in the atmosphere, the craft flies into space. A message from Apophis plays to say that the traitors who took his property would die in the cold of space. Can the SGC find a way to bring them back, or will they die drifting ever further from Earth?

Where to Watch
Stargate SG-1, Season 4 Episode 12 image

Episode 13

The Curse

Fri, Sep 22, 200044 mins

Daniel attends the Chicago funeral of Dr. Jordan, the archaeology professor for whom he was the most brilliant assistant ever, before leaving to pursue his far-fetched alien-Egyptian theory and join the Stargate program; but smells a rat after an explosion in Jordan's lab. Daniel brings in the team, soon realizing that Jordan's last Egyptian expedition stumbled upon a unique grave, from which pieces are missing, which actually held the remains of at least one Goa'uld divinity: Osiris, god of the afterlife, and first Pharaoh. Dr. Fraiser's analysis of a canopic jar [mummy entrails-container] finds an amazingly well-preserved symbiont, but the trace of its counterpart reveals one of Jordan's present assistants, Dr. Steven Rayner, whom Daniel suspects took a golden amulet to open a unique tomb and fell prey there to another goddess, Isis, who actually turns out to be incarnated from Jordan's other assistant, Dr. Sarah Gardner, who remains quite alive and murderous.

Where to Watch
Stargate SG-1, Season 4 Episode 13 image

Episode 14

The Serpent's Venom

Fri, Sep 29, 200044 mins

Teal'c is on his home planet, Chulak, where there is rebellion among the Jaffa warriors. He is betrayed as a sacrilegious shol'va (traitor) by Rak'nor, son of a Jaffa friend of his father, and handed to Terok, the torturer of system lord Heru'ur. Ignorant of his fate, the other SG-1 members join Jacob in a risky attempt to take hold of a space mine using a Tok'ra ship piloted by Jacob. En route to Apophis' spaceship, the expedition finds out that Teal'c is being offered as a confidence-building present from Heru'ur to cement an alliance with Apophis against the other system lords, which would make the Goa'uld threat more dangerous than ever. They decide to save Teal'c, but their attempt fails. However, Teal'c's resistance to torture and clear conviction that Goa'uld are not gods finally convinces Rak'nor, who now bravely acts.

Where to Watch
Stargate SG-1, Season 4 Episode 14 image

Episode 15

Chain Reaction

Fri, Jan 5, 200144 mins

General Hammond mysteriously retires from the SGC and a new general is brought in, who breaks up SG-1: Daniel and Sam are scientists, Teal'c is with SG-3 and O'Neill commands a new SG-1. O'Neill tries to convince Gen. Hammond to return, but he finds out that someone ordered Hammond to leave or they would hurt his grandchildren. While the others are occupying the new general, O'Neill tries to find out who that "someone" is. Thereto he must place his trust in the one person he hates most: Maybourne.

Where to Watch
Stargate SG-1, Season 4 Episode 15 image

Episode 16

2010

Fri, Jan 12, 200144 mins

In 2010, Robert Kinsey is president of a brave new world since he concluded the alliance with the Aschen, a race discovered by SG-1 which lets humanity enjoy its far advanced science and technology, including a vaccine against aging. Sam is now a civilian scientist, married to ambassador Joe Faxon, whose only worry is failing to get pregnant. When she double-checks the Aschen doctor Mollem's computer with Dr. Fraiser, who felt superfluous given superior medicine, they discover human fertility is down 90% worldwide in three years. Sam, Daniel and Teal'c turn to retired General Jack, who always warned against handing over technological control, for a daring plan to turn the clock back like General Hammond did once, sending a message to their past with the exact time of a solar flare, which Sam can calculate using the Aschen computer. Only one ingredient is out of their reach: the GDO device to control the Stargate's iris, which is in the White House. Sam implores her husband Joe to steal it, but he has a secret as well as sincere objections.

Where to Watch
Stargate SG-1, Season 4 Episode 16 image

Episode 17

Absolute Power

Fri, Jan 19, 200144 mins

When a "chosen" boy found on planet Abydos is brought to SGC, he sends a telepathic message, causing Daniel Jackson's personality to undergo disturbing changes. Will the rest of SG-1 be able to solve the mystery of the boy's origin before he becomes a power-hungry warmonger?

Where to Watch
Stargate SG-1, Season 4 Episode 17 image

Episode 18

The Light

Fri, Jan 26, 200144 mins

SG-5's Lieutenant Barber commits suicide by jumping into the Stargate shortly after a mission on a planet where a palace abandoned by the Goa'uld about 200 years ago is being studied by Daniel. Soon after, Daniel develops violent mood swings and is committed to a hospital with a neurotransmitter brain condition, presumed fatal after all the other SG-5 members die. Meanwhile, SG-3 has visited the planet, finding only the light installation Daniel reported as particularly fascinating and a human teenage boy, Loran, who hid from Daniel's expedition, but now tells Jack he was left there by his parents, scientific researchers. Back in SGC, Jack also develops symptoms. Sam and Dr. Fraiser conclude that it must be some addiction linked to the light, so when Daniel is nearly terminal Jack, who might not have been exposed too long himself, must bring him back. Jack insists they try turning off the light, and leans on Loran, who is looking for a father-figure; he even gives Teal'c an early "birthday present," but has a dark secret.

Where to Watch
Stargate SG-1, Season 4 Episode 18 image

Episode 19

Prodigy

Fri, Feb 2, 200144 mins

The Chief of Staff visits SGC and meets Jack, while Daniel is on a mission. Sam is giving a physics lecture at the Air Force Academy, where she meets and is intrigued by the theoretical insight of US Air Force Cadet Jennifer Hailey, academically her successor but a pest in terms of conduct and attitude. When Hailey is about to be expelled for violence against another cadet, Sam convinces the Academy and General Hammond to give her a motivating taste of Stargate work. So they join Jack and Teal'c who are on a planet's moon as security escort to three scientists, but soon find a life-form consisting solely of buzzing lights isn't as inoffensive as it sounds. Sam and Hailey come up with incompatible theories - and time is running out, with the fuel for the generator they need for the only known defense - so Jack makes a barely educated gamble.

Where to Watch
Stargate SG-1, Season 4 Episode 19 image

Episode 20

Entity

Fri, Feb 9, 200144 mins

After a MALP goes out of remote control, even flying wild, an energy burst during an emergency Stargate shutdown causes serious damage in SGC, and wounds operator Sergeant Harriman; Dr. Fraiser keeps SG-1 down for check-ups. It soon becomes clear a 'computer program' has entered through the wormhole, and is taking over the SGC computer network. Even after Sam shuts it down, it reemerges, constantly requiring more memory. It not only 'nests' in a hardware constellation it creates, but even manages to take over Carter's brain and communicates. It's a non-corporeal life form, whose entire home was damaged by a virus caused by the MALP radio waves, and believes its best survival chance is inside Sam, as the humans won't sacrifice her. True soldier Jack, however, decides to play hardball.

Where to Watch
Stargate SG-1, Season 4 Episode 20 image

Episode 21

Double Jeopardy

Fri, Feb 16, 200144 mins

On Juna, SG-1 gets a hostile welcome from the local warriors' leader Darian, who seems incredulous they even dared to return. They loyally deliver Sam and Teal'c to Cronus and told them to bury the Stargate. Cronus orders Darian to decapitate Daniel by staff weapon- to find his head is robotic. Cronus's obvious astonishment makes Darian doubt his divinity. At the SGC, Harlan urge them to go on a mission. The master robot-creator tells SG-1 that the robot versions of them he created need to recharge after 48 hours. In order to prevent the Goa'uld gaining access to their duplicates' memories, SG-1 reluctantly go to Juna. Darian now joins them, but feels most of his people won't dare challenge Cronus. The two Teal'cs concentrate on revenging the original's father by attacking Cronus recklessly, while the Sams and Jacks deal with the military problems and overthrowing the Goa'uld rule.

Where to Watch
Stargate SG-1, Season 4 Episode 21 image

Episode 22

Exodus

Fri, Feb 23, 200144 mins

SG-1 return to the Tok'ra planet to help them move to a safer planet. Tanith hasn't heard the news of moving to a new planet and SG-1 decide it's time to tell him that they've known all along that he was a spy of Apophis. Tanith escapes his prison and leaves the Tok'ra base. He signals Apophis. When the Tok'ra hear word of this, SG-1 plans a trap. Move the Stargate to a ship and send it towards the sun which will cause a nova explosion, destroying Apophis and his army. Jacob Carter volunteers to send the Stargate to the sun. SG-1 goes with him. As soon as the Tok'ra have left, SG-1 takes the Stargate onto their ship. Soon after the Stargate has been sent toward the sun, Apophis and his ships show up. Two gliders are sent down to the planet to pick up Tanith. O'Neill and Teal'c head toward the planet in their glider and stop the ships from reaching Tanith, but their glider gets hit as well and they land back on the planet. A Gou'ald ship sees all this and heads down to the planet. The Jaffa soldiers pick up Tanith and kill Teal'c. They bring his body aboard, leaving O'Neill alone on the planet. SG-1 picks him up and Jacob flies the ship into hyper speed just as the Stargate hits the sun and explodes. Apophis's army is destroyed. But the effects of the explosion catch up with SG-1's ship and knocks it off course. They end up in another galaxy. Jacob says it will take them over a hundred years to get home, even with hyper speed. Soon another ship comes out of hyper speed. It's Apophis's mother ship.

Where to Watch
Stargate SG-1, Season 4 Episode 22 image