US Airdate : 21 January 2005

UK Airdate : 14 December 2004

Summary

The team receives a message from a Replicator that looks exactly like Carter. Created by another Replicator called Fifth, Replicator Carter was meant to serve by Fifth's side.

However, possessing Carter's personality, she resisted Fifth, and escaped. Now on the run, she informs SG-1 that Fifth and his entire armada are headed their way, and that she wishes to be destroyed!