SG-1 must free an alternate reality Earth from a Goa'uld invasion after duplicates of Samantha Carter and Charles Kawalsky come through the quantum mirror.

SG-1 discovers a planet where children are used to acquire knowledge for the entire population, then discarded.

When Daniel goes insane, SG-1 must deal with the legacy of Machello's anti-Goa'uld technology.

The Asgard aid Earth in negotiating a nonagression treaty with the Goa'uld System Lords.

SG-1 must find a renegade Goa'uld who has been hiding on Earth for thousands of years.

O'Neill, Carter and Jackson must escape Hathor's clutches, while Teal'c tries to raise a Jaffa army on Chulak. General Hammond must take desperate measures to rescue the team.

A present-day woman believes she's the reincarnation of Xena, the warrior princess, while her disbelieving boyfriend thinks she's crazy, and seeks help from a past life expert, with some familiar…

Callisto returns from Hell with a double mission: corrupt Xena and make Julius Caesar emperor, but plans change when Caesar's allies turn on him and when Roman soldiers capture and…

Gabrielle becomes Queen of the Amazons after Ephiny dies at the hand of Brutus. But things become even more complicated when she learns that Caesar's enemy Pompey has taken many…

Family and friends gather for Gabrielle's surprise birthday party only to become suspects in a murder investigation instead when a bounty hunter looking to take Xena in, is murdered. Now…