A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.
- Directed by
- Peter DeLuise
- Written by
- Brad Wright
Guest stars
All episodes — Season 4
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S4 E1Small Victories (2)
Jun 30, 20007.944 min
O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion.
S4 E3Upgrades
Jul 14, 20008.544 min
A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.
S4 E4Crossroads
Jul 21, 20007.244 min
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.
S4 E5Divide and Conquer
Jul 28, 20008.244 min
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.
S4 E6Window of Opportunity
Aug 4, 20009.344 min
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.
S4 E7Watergate
Aug 11, 20007.444 min
The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.