Legacy
When Daniel goes insane, SG-1 must deal with the legacy of Machello's anti-Goa'uld technology.
Episodes
21
Crystal Skull 44
An alien artifact causes Daniel to disappear, and the team looks for help from his institutionalized grandfather.
22
Nemesis (1) 44
SG-1 faces creatures of mass destruction that even the Asgard can’t control, and must destroy Thor’s infested vessel before the Replicator bugs reach Earth.
