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Stargate SG-1: 2x10

Bane

Teal’c is infected with deadly venom from a giant insect, and begins a terrible transformation. When he escapes the S.G.C., SG-1 must find him before Colonel Maybourne does.

Stargate SG-1: Season 2 Episode 10
Stargate SG-1: Season 2 Episode 10
Sep. 25, 1998