Synopsis by Hal Erickson
An alien lifeforce probe has succeeded in infecting the SGC computer. The technicians manage to delete this "virus", but the probe promptly regenerates itself, using its combined data. The danger is heightened when the aliens infiltrate Carter (Amanda Tapping), making her a repository for its vast collection of knowledge. In order to save the SGC base, O'Neill (Richard Dean Anderson) may be forced to kill Carter.