Original Air Date	August 7, 1998
Guest Stars	Teryl Rothery as Dr. Fraiser Tobias Mehler as Lieutenant Graham Simmons Dan Shea as Sergeant Siler Gary Jones as Technician
Directed By	David Warry-Smith
Story By	Michael Greenberg Jarrad Paul
Teleplay By	Brad Wright
Synopsis	The SG-1 team bring back a mysterious orb from an abandoned world, hoping it will be a source of technology to fight the Goa'ulds. What the orb turns out to be is nothing like they'd thought. In fact, the orb ends up taking complete control of the SGC, and all its occupants, O'Neill in particular.