The Fourth Horseman (1) Stargate SG-1 : Season 9 Episode 10
TV-14 Syfy 44m
Aired: September 16th, 2005 @ 9:00 PM EST on Syfy
Earth is infected with a deadly Ori plague, prompting an ally from SG-1's past to come to their aid. Gerak proposes that the Free Jaffa follow the Ori religion.
