Stargate SG-1
The Fourth Horseman
Season 9, Episode 10 · Aired 2005-09-16
Synopsis
After an SGC officer returns to Earth after unknowingly being infected with the Ancient Plague, the virus quickly spreads throughout the United States. Not wanting the Ori to gain control of the Milky Way Galaxy, Orlin yet again descends to help Carter find a cure.
In the series
This episode is part of Stargate SG-1 (1997–2007) on Showtime/Syfy.
Portal to the stars — franchise engine born from a film and built for the long haul.
Key cast
- Richard Dean Anderson as Jack O'Neill
- Amanda Tapping as Samantha Carter
- Christopher Judge as Teal'c
- Michael Shanks as Daniel Jackson