All episodes Season 9 S09E10 2005-09-16 60 min 1990s Showtime/Syfy

Stargate SG-1

The Fourth Horseman

TV Flash files “The Fourth Horseman” as hour 183 of 213 in the TV Flash guide — Stargate SG-1 (1997–2007) on Showtime/Syfy, season 9, episode 10, aired 2005-09-16, 60 min.

From the desk

How this hour is filed

This leaf is S09E10: listed hour 183 of 213 in the Stargate SG-1 guide, hour 10 of 20 in season 9. It aired 2005-09-16 (60 min). The listed hour before it is “Prototype” (S09E09). Next is “The Fourth Horseman Part 2” (S09E11).

Stargate SG-1 — The Fourth Horseman (S09E10)

Catalog log

Broadcast listing — not a TV Flash recap.

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.

Viewer FAQ

Where does The Fourth Horseman sit in the Stargate SG-1 guide?

S09E10 is listed hour 183 of 213 — hour 10 of 20 in season 9, season 9 episode 10.

When did Stargate SG-1 S09E10 air?

The Fourth Horseman aired 2005-09-16 and is listed at 60 minutes.

Is it connected to the movie?

Yes — it continues and reworks the 1994 Stargate film into long-running series mythology rather than a one-off adaptation.

In the series

Why this series still plays

A military-science team dials an ancient gate, fights parasitic false gods, and turns a 1994 film into a ten-season franchise engine. Richard Dean Anderson's O'Neill brings wry competence; Carter, Jackson, and Teal'c make exploration feel like unit loyalty. Showtime to Syfy, Atlantis and Universe later. Comfort portal sci-fi that still builds a cosmos.

Showtime, July 27, 1997, later Syfy: a military-science team dials an ancient gate, fights parasitic false gods, and turns a 1994 film into a ten-season franchise engine. Brad Wright and Jonathan Glassner built the long haul. Richard Dean Anderson's Jack O'Neill brought wry competence; Amanda Tapping's Samantha Carter, Michael Shanks's Daniel Jackson, and Christopher Judge's Teal'c made exploration feel like unit loyalty under fire. Ten seasons through 2007 — among the longest U.S. sci-fi series runs. Portal…

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Also in season 9

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