Insiders

Insiders is the fourth episode of the tenth season of Stargate SG-1.

Plot
As SG-1 continues to piece together clues to the whereabouts of the elusive Ancient weapon that could defeat the Ori, an alien vessel streaks into Earth's atmosphere towards Stargate Command. When the vessel does not respond to hails, it is shot down and crash lands. To everyone's surprise, the pilot is none other than Ba'al (Cliff Simon).

Ba'al informs SG-1 that his clones, which he had created to assist him, are now turning against him, and he is seeking SG-1's help in tracking them down and obliterating them. In exchange, he promises to assist SG-1 by giving them the key to finding the planet on which the Ancient weapon is located.

Realizing that Ba'al's clones might turn over the location of the weapon to the Ori, the team sets to work capturing the clones and bringing them back to the SGC. Soon, there are nearly 20 Ba'al clones in isolation at the SGC, all claiming to be the real Ba'al. Before the team members are able to elicit any useful information from the clones, they escape.

The Ba'al clones work together to gain access to the list of gate address in the SGC computer - including the addresses of Ancient worlds input by Jack O'Neill when he had the information from the ancient repository in his brain. They then use their combined teleport beacons to overcome the SGC jamming signals and teleport out of the SGC.