06.10 Episode 120
Airdate: August 16, 2002

When SG-1 makes first contact with the planet Pangar, the Pangarans are anxious to initiate trade with Earth. They seek stargate technology and gate addresses to known Goa'uld worlds and in exchange they offer a miraculous drug called tretonin which strengthens the immune system and allows them to live in almost perfect health. Their interest in Goa'uld worlds is suspicious, and Jonas is convinced that the Pangarans are hiding something. At night, he and Teal'c break into a guarded facility where they find vats teeming with Goa'uld symbiotes, and the Pangarans admit that the symbiotes are critical in the manufacture of tretonin.

Many years ago, archaeological excavations on Pangar had uncovered a Goa'uld queen in stasis, and she had been bred in captivity to produce the offspring for the manufacture of tretonin. However, a genetic flaw in the offspring has limited the effectiveness of the drug, and because it suppresses the natural immune system, the population has become dependent. Furthermore, the queen is dying, and if another cannot be found, the Pangarans will face death. SG-1 seeks help from their allies, and Malek and Kelmaa of the Tok'ra arrive to assist, hoping that an antidote for the tretonin can be found.

Teal'c and Jonas, who have been assisting with the excavation of temple ruins, make a horrifying discovery. The Goa'uld queen whom the Pangarans have been breeding is in fact Egeria, the founder of the Tok'ra. Kelmaa frees the Tok'ra queen and gives her life so that Egeria might use her host. Egeria explains that the genetic flaw in the symbiotes had been deliberate in order to convince the Pangarans to end their experiments. However, Egeria knows that she is dying, and in a final act of compassion she shares with the Pangarans the knowledge to produce an antidote to the tretonin and to save their people.

Written by: Damian Kindler
Directed by: Andy Mikita

Guest Starring: Peter Stebbings as Malek, Malcolm Stewart as Dollen, Gwynyth Walsh as Kelmaa/Egeria, Allison Hossack as Dr. Zenna Valk, Daryl Shuttleworth as Commander Tegar, Teryl Rothery as Dr. Fraiser, Trever Havixbeck as Pangar Sentry, Andrew Moxham as Pangar Sentry

Reference: Dollen, Egeria, Goa'uld, Kelmaa, Malek, Pangar, Pangarans, Ra, Shak'ran, Stasis, Tegar, Tok'ra, Tretonin, Zenna Valk