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

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

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

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

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

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

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.

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.

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

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.

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.

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.

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

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.

Mulder and Scully uncover strange occurrences in an elderly care home when one of the nurses is attacked by an unseen force she claims to be one of the 90…

O’Neill steals technology from the Tollan, and is forced to leave the Stargate program. Maybourne offers an intriguing proposal.

The members of SG-1 are imprisoned on a planet and become pawns in a war of ideology.

SG-1 discovers the mystical planet Kheb, and must find the Harcesis child of Apophis and Sha’re before Apophis’s army does.

An alien artifact causes Daniel to disappear, and the team looks for help from his institutionalized grandfather.

SG-1 receives alien brain implants that manifest themselves as a bizarre man, who tells them that they would not survive the procedure to remove him.

After a meteor strike buries the Stargate, O’Neill finds himself stranded on a planet with no hope of rescue.

SG-1 encounters an entire planet suffering from amnesia. The planet’s leader returns to Earth with SG-1 to find a cure, but SG-1 suspects she may not be who she appears…

O’Neill, Carter and Jackson awaken from stasis in what appears to be the S.G.C. — almost 80 years in the future.

SG-1 returns from a mission and discovers that metamorphic aliens have taken over the complex.

SG-1 discovers an elderly man known for developing technology to fight the Goa’uld. Daniel is tricked into switching bodies with the man, Ma’chello, who believes he is “owed” for all…

SG-1 must free an alternate reality Earth from a Goa’uld invasion after duplicates of Samantha Carter and Charles Kawalsky come through the quantum mirror.

Apophis, SG-1’s greatest enemy, seeks sanctuary from Sokar and ends up near death in the S.G.C. infirmary.

A group of primitive aliens begin to fall deathly ill after SG-1 arrives.

A young boy arrives through the Stargate, and warns of plot by invisible aliens to kill all of the human race in order to rob the Goa’uld of potential hosts.

SG-1 discovers a military camp where young men are trained to impersonate SGC personnel to infiltrate Earth.

Jackson deals with the apparent death of his wife, Sha’re, at the hands of Teal’c.

When Daniel goes insane, SG-1 must deal with the legacy of Machello’s anti-Goa’uld technology.

O’Neill becomes the unwilling receptacle for a library of alien knowledge.

SG-1 discovers a planet where children are used to acquire knowledge for the entire population, then discarded.

After gating to a world on the edge of a black hole, the S.G.C. cannot disengage the Stargate. All of Earth becomes endangered by the time-distorting gravity field.

The Asgard aid Earth in negotiating a nonagression treaty with the Goa’uld System Lords.

SG-1 is imprisoned in a virtual reality realm and forced to relive the worst moments of their lives over and over.

Jackson becomes addicted to the effects of a Goa’uld sarcophagus, and falls for the planet’s manipulative princess.

SG-1 discovers an ancient artifact that takes O’Neill and the S.G.C. hostage.