The Enemy Within



Colonel Jack O'Neill wants Teal'c as a new member of the team, an alien who risked his life to save them.General Hammond will not approve the appointment, The doctors treat Teal'c like a guinea pig.

Kawalsky, O'Neill's friend, has headaches caused by an alien larvae that has got in to his brain. This larvae is trying to take over Kawalsky's body in to attempt to get back through the Stargate.Teal'c helps the doctors operate to remove the alien.

However is Kawalsky still under its control?