When the SG-1 team discover a sealed chamber of dead Goa'ulds, Daniel Jackson is exposed to the parasites that killed them and threaten to drive him insane.



(developed for television by), (developed for television by) | 1 more credit »

Watch Now

From $1.99 (SD) on Amazon Video



Episode cast overview:
Eric Schneider ...

What You Missed at San Diego Comic-Con 2017

From the madness of the convention floor to the emotional panel reveals and star-studded interviews, catch up on all the unforgettable sights from Comic-Con.

Browse Our Guide to Comic-Con



SG-1 discover nine Goa'uld corpses in a sealed chamber, Teal'c identifies the crest as the nine Linvris, minor rivals of the system lords. While reading a tablet containing page one of some war plan, Daniel unknowingly gets infected by a parasite, which gives him visual and auditive delusions back on earth. An epidemic of migraine causes the general to keep all SG-teams in the base for examination. Daniel was already in a padded psych ward cell when during a visit from the colleagues he hears Ma'chello's voice say the parasite has left to enter its real target, a Goa'uld: Teal'c, for whose symbiont it is lethal. During examination of the page turner which released the designer organism, Jack, Dr. Fraiser and Sam get infected by several parasites, only Sam is found immune, even able to kill it by hosting it. The race is on to find how and hopefully use that mechanism to save the other three infected ones... Written by KGF Vissers

Plot Summary | Add Synopsis






Release Date:

16 July 1999 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

| (Dolby 5.1)


Aspect Ratio:

16 : 9
See  »

Did You Know?


(at arounf 13 mins) Hammond says that he will close the program down until Dr MacKenzie and her team... Dr MacKenzie is male. See more »


Daniel: Why are you so quick to jump to the conclusion that I'm crazy? I mean I'm dangerous, I'm out of control? It's 'cause I'm kinda acting that way, aren't I?
See more »


Features Stargate SG-1: Holiday (1999) See more »


End Title
Written by Joel Goldsmith
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Delusion and Parasite
25 November 2015 | by (Rio de Janeiro, Brazil) – See all my reviews

The SG-1 finds a chamber with nine Goa'uld bodies inside and Teal'c identifies them as the rivals of the System Lords, Linvris. Daniel finds a device and while reading it, he is infected by an alien parasite. Back on the SGC, Daniel is delusional and Dr. Fraiser locks him in a cell while the SG-1 is kept in quarantine for observation. When Jack, Sam and Teal'c visit Daniel in the cell, his parasite leaves his body and infects Teal'c. Further, Daniel overhears Ma'chello's voice telling that the parasite was intended to kill Goa'uld. Will Daniel convince his friends that he is not mad?

"Legacy" is a good episode of SG-1 with well-written story and screenplay. The plot is also well resolved with the skilled Sam finding a means to save the SG-1 and Dr. Fraiser. My vote is seven.

Title (Brazil): "Stargate SG-1: Legacy"

6 of 6 people found this review helpful.  Was this review helpful to you?

Contribute to This Page