A duplicate of Colonel Carter seeks help from Stargate Command in defeating the Replicator Fifth, who she claims has found a way to counter the Asgard’s new weapon.

While the Goa’uld threaten to attack Earth, SG-1 and the Asgard make a last, desperate stand against the Replicators, which have captured Major Carter and invaded the last outpost of…

Carter and Teal’c go in search of the Asgard to try and save Colonel O’Neill, but discover that the Asgard’s enemy has returned with a vengeance. The System Lords seek…

When Earth’s attempts to exploit a newly-discovered naquadah mine are thwarted by a tribe of indigenous Unas, SG-1 must turn to an old friend for help.

The team is called into battle unexpectedly when the Asgard homeworld is overrun by Replicators — which have evolved into a startling new form.

Sam and Dean investigate a brutal death and discover that the killer is a lycanthrope: a werewolf.

The rebel Cylons and the Colonial humans react to Hera’s kidnapping while the physical condition of the Galactica continues to deteriorate.

The Colonial fleet faces starvation when the food-processing machines are contaminated. Kat plays a vital role in the success or failure of the “Passage” through space.