Season: 4

Original Airdate: February 9, 2001

Writer(s): Peter DeLuise

Director(s): Allan Lee

Guest Stars
Gary Jones as Sergeant Davis
Teryl Rothery as Dr. Fraiser
Dan Shea as Sergeant Siler

Synopsis: When SG-1 sends a probe through the Stargate, a powerful electronic impulse comes back through the wormhole and hides inside SGC’s computer. But when this electronic entity suddenly jumps inside Carter’s mind, SG-1 must choose between saving SGC and saving Carter’s life.