Aired: July 31, 1999 | Season: 3 | Episode: 6

Overview
Runtime: 44m
Directed by: Brad Wright, Jonathan Glassner, Peter DeLuise, Robert C. Cooper, Tor Alexander Valenza
Written by: Brad Wright, Jonathan Glassner
Guest stars: Jay Acovone, Shawn Reis, Tracy Westerholm, Ty Olsson
Description
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.