The Tollan put Skaara and Klorel on trial to determine who will control the host body.

SG-1 receives alien brain implants that manifest themselves as a bizarre man, who tells them that they would not survive the procedure to remove him.

The members of SG-1 are imprisoned on a planet and become pawns in a war of ideology.

A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.

When a member of the SGC tries to kill a Tok'ra, it is revealed that O'Neill and Carter may be victims of an untraceable form of Goa'uld mind control.

O'Neill and Teal'c are caught in a time loop in the SGC, and must relive the same 10 hours over and over again.

When the Kelownans discover that a massive underground vein of naquadah is being converted into naquadria, Jonas Quinn seeks help from Earth in avoiding the total destruction of his planet.