An alien world offers Earth a medicine with the power to cure any illness — but the hidden price may be too high to pay.

Tensions rise between the Tok’ra and rebel Jaffa at the S.G.C.’s offworld base when they are attacked by an invisible enemy.

When SG-1 is captured by the Goa’uld, a pair of scientists mount a rescue operation … whether they’re wanted or not.

Jonas’ people ask Earth for military aide in an impending war with their rival nations, but his former mentor offers another solution: a resistance movement ready for a coup.

O’Neill is captured and tortured by the Goa’uld, and must rely on an old friend to survive.

Carter, Teal’c and Jonas investigate the death of a scientist with connections to the Goa’uld, and find a small town whose citizens harbor a dark secret.

SG-1 investigates the discovery of a woman frozen in the ice in Antarctica, who may be a link to the gate builders. A mysterious disease threatens to kill everyone at the research base.

SG-1 boards an abandoned Goa’uld mothership that has mysteriously arrived in Earth’s orbit, and must escape the doomed vessel when it crashes into the ocean.

Carter must find a way to save Earth from total destruction at the hands of the Goa’uld, who have turned the Stargate into a doomsday bomb. Rya’c joins his father on a mission to destroy the Goa’uld weapon.

Tragedy reunites Teal’c with his son, who blames him for the death of his mother. O’Neill and Carter launch a risky plan with untested technology when Earth comes under attack by the Goa’uld.

SG-1 must come to the rescue of their once-powerful allies when the Goa’uld attack a secret Asgard laboratory.

Daniel Jackson is exposed to a lethal dose of radiation while visiting an alien civilization that is building a weapon of mass destruction.

SG-1 must turn to a pair of convicted criminals to save a world from annihilation by the Goa’uld.

SG-1 encounters a young woman with the ability to control Replicators, and who may hold the key to the salvation of the Asgard.

A charismatic Jaffa leader seeks to forge an alliance between Earth and his rebel followers, winning the allegiance of Teal’c and Bra’tac.

Earth finds itself threatened by something even larger than the Goa’uld when the team learns that an asteroid is on a collision course with the planet.

Dr. Jackson’s undercover mission to a Goa’uld summit is complicated by the arrival of a surprise guest. The rest of the team face a full-scale invasion of the Tok’ra homeworld.

The Tok’ra war with the Goa’uld escalates, and the rebel faction sends Daniel Jackson to a secret meeting between the System Lords.

Disaster strikes the Stargate, trapping Teal’c in transit. SG-1 must turn to Russia — and to their enemies — for help.

SG-1 trains a team of raw cadets, and Colonel O’Neill is forced to take them into a real-life battle situation when he learns of a possible alien incursion at the SGC.

An alien ship approaches Earth, sending SG-1 to an old friend for some answers — where they discover that Martin Lloyd has created a TV show about the Stargate program.

When Carter goes missing, O’Neill teams up with Col. Maybourne again to free her.

SG-1 encounters a potential new, technologically advanced ally in the war against the Goa’uld — though they do not know the Aschen’s dark secret.

The Tollan offer Earth advanced weapons technology, prompting a secret investigation on Tollana — one that leads to a startling discovery.

SG-1 teams with a Russian unit when one of their Stargate teams goes missing in a mysterious alien ziggurat.

SG-1 discovers a civilization that uses Unas as slave labor, and attempt to liberate Daniel’s friend, Chaka.

Cassandra mysteriously falls ill, sending SG-1 back to her home planet — where they uncover a dark Goa’uld secret.

SG-1 discovers that their recent trip through the Stargate may have inadvertently doomed an entire civilization.

O’Neill and Lieutenant Tyler are ambushed by Goa’uld forces and trapped behind enemy lines — while the rest of their team discover they don’t know who Tyler is.

An alien being is smitten with Carter and follows her back to Earth. It assumes a human form and pursues a relationship with her.

His mind altered by Apophis, Teal’c must undergo a ritual that takes him to the edge of death itself, in order for him to rediscover who he is.

SG-1 finds themselves stranded in a crippled ship in a distant galaxy — with Apophis threatening to destroy them. Teal’c is brainwashed and made loyal to Apophis once again.

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.

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.

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

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.

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

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

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.

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.