The Devil You Know

Plot
SG-1 once again meet Apophis. He throws them in the pit and brings Carter up for interrogation. Using Tok'ra mind device and a drug called "The Blood of Sokar", he plunges Sam into a dream made up of old memories. She sees herself on the day of her mother's funeral, with Jacob asking for her forgiveness. Confused, Sam remembers that she forgave her father years ago, and if she didn't, she wouldn't have joined the Stargate program. Out of the blue, Jacob starts asking her how to get to Earth, and what her IDC is. Sam refuses to give in, and Apophis puts her back in the pit.

Meanwhile, Teal'c escapes the Death Gliders and returns to the Tok'ra. The Council decides to launch a device that would burrow to the center of Ne'tu and destroy the moon within twelve minutes, while Sokar is in his ship and unable to escape the blast.

Back on Ne'tu, Apophis interrogates Jack as he did with Sam, plunging him into a dream-memory of his son. Charlie accuses Jack of never playing with him, saying that if they'd played ball together, Charlie would never have shot himself. He refuses to play ball unless Jack tells him where the Asgard homeworld is. Jack manages to break out of the memory, and is thrown back into the pit. Afterwards Apophis has Martouf and Sam brought in together, threatening to kill Jolinar's last host if Martouf doesn't tell him where the Tok'ra are. Martouf lies convincingly, and Apophis uses the information to gain an audience with Sokar. Daniel is tortured next with a memory in which Jack asks him where the Harcesis child is.

The Tok'ra launches the device into Ne'tu. Apophis is grabbed by Sokar's men. Sokar explains that he already conquered the planet Martouf named as the Tok'ra base. Enraged, Apophis draws a concealed blade and kills Sokar's Jaffa. Taking the Jaffa's staff weapon, he aims it at Sokar, but Sokar activates his personal shield device. Apophis is forced to run.

Trapped on Sokar's ship, SG-1 and Martouf can only escape by using the transporter rings, but these will take them to Ne'tu, which is about to be destroyed. Teal'c solves this by flying the cargo ship into the path of the beam while it is being activated, intercepting them in the ship's own set of transport rings. They escape while Ne'tu and Sokar are destroyed. Apophis escapes and seizes Sokar's power base, becoming the strongest Goa'uld among the System Lords.