Uninvited
Season 10, episode 5 of Stargate SG·1 (1997) · 2006-08-11
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Episode Summary
While assisting SG-3 on an offworld mission, Teal'c encounters a savage alien creature that is killing the inhabitants. SG-1 investigates and learns that a parasite is to blame. The team suspects that the Ori are responsible, but they are shocked when they find out the real cause.