Nemesis (1) Stargate SG-1 : Season 3 Episode 22
TV-14 Syfy 44m
Aired: March 10th, 2000 @ 9:00 PM EST on Syfy
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.
