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Stargate SG-1
Season 9 · Episode 10
The Fourth Horseman (1)
8.044mSeptember 16, 2005
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.
Episodes
- Episode 1Avalon (1)
- Episode 2Avalon (2)
- Episode 3Origin (3)
- Episode 4The Ties That Bind
- Episode 5The Powers That Be
- Episode 6Beachhead
- Episode 7Ex Deus Machina
- Episode 8Babylon
- Episode 9Prototype
- Episode 10The Fourth Horseman (1)
- Episode 11The Fourth Horseman (2)
- Episode 12Collateral Damage
- Episode 13Ripple Effect
- Episode 14Stronghold
- Episode 15Ethon
- Episode 16Off the Grid
- Episode 17The Scourge
- Episode 18Arthur's Mantle
- Episode 19Crusade
- Episode 20Camelot