S4·E20 Entity
Core
Aired February 9, 2001
Synopsis
The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter.
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Frequently Asked Questions
When did Season 4 Episode 20 of Stargate SG-1 air?
Season 4, Episode 20 ('Entity') originally aired on February 9, 2001.
How long is Season 4 Episode 20 ('Entity')?
The episode follows the standard broadcast runtime for Stargate SG-1.
What happens in Stargate SG-1 Season 4 Episode 20?
The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter....