SG-1 investigates a conspiracy theorist who has detailed knowledge of the Stargate program.

The members of SG-1 are used as forced labor in an underground alien facility after their memories are erased by the ruling elite.

SG-1 is caught in a conflict between two civilizations trying to colonize the same planet.

Dr. Jackson is taken captive by an Unas while on an archaeological dig. The SGC mounts a rescue operation, but discovers a danger of their own.

The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.

O'Neill and Teal'c are caught in a time loop in the SGC, and must relive the same 10 hours over and over again.

When a member of the SGC tries to kill a Tok'ra, it is revealed that O'Neill and Carter may be victims of an untraceable form of Goa'uld mind control.

Part man. Part machine. All cop. The future of law enforcement.

Teal'c is reunited with his lost love — a woman who claims to have found a way to communicate with her symbiote and defeat the Goa'uld.

A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.