KEY EPISODE(S) -
The Tok'ra, Part 1 - SG-1 meets the Tok'ra Martouf -- a leader in the Goa'uld resistance movement. He takes an immediate liking to Carter after learning that she was the last host of his mate, Jolinar.
The Tok'ra, Part 2 - Martouf welcomes Jacob Carter as the newest member of the Tok'ra, and helps SG-1 establish an alliance with the Tok'ra.
Serpent's Song - Martouf visits the S.G.C., where Apophis lays dying, and recommends that they hand him over to Sokar to save themselves.
Jolinar's Memories - SG-1 and Martouf travel to Sokar's hellish prison moon on a dangerous mission to rescue Jacob/Selmak.
The Devil You Know - Apophis drugs Martouf to try and learn the location of the Tok'ra, giving him a vision of his former mate, Jolinar -- but Martouf overcomes it, and lies to him. Though Martouf is willing to sacrifice himself for the mission, Teal'c saves them from Ne'tu.
Divide and Conquer - Martouf joins SG-1 in preparing for the formal allying of Earth and the Tok'ra, but is killed when it is revealed that he has been brainwashed by the Goa'uld to assassinate the President of the United States.
Summit - More than a year after Martouf's death, his symbiote Lantash lives on in a Tok'ra stasis chamber -- which is destroyed in a Goa'uld attack. Lantash seeks refuge in the dying Lieutenant Elliot.
Last Stand - Unable to save himself or Elliot, Lantash dies saving SG-1 and Jacob Carter -- after telling Sam that he loved her.
Ripple Effect - When a bridge in the metaverse is formed an alternate reality Dr. Fraiser arrives at Stargate Command, five years after his death.