The team meets , a brilliant and compassionate scientist who has become a leader for her people. As Daniel Jackson works closely with her, a romantic attraction develops, providing a rare moment of connection for him shortly after the loss of his wife, Sha're. A Dark Connection: The Return of Linea

Stargate SG-1 Season 3, Episode 11: "Past and Present" — A Review

The tension peaks when Ke'ra steals the antidote and regains her memories. Horrified by the "heartless personality" she has unleashed, she attempts to end her own life. In a tragic but poetic solution, Daniel convinces her to take another dose of the Dargol derivative, intentionally erasing her memories once again. Retro Recaps: Stargate SG-1 – “Past and Present”

The core of "Past and Present" lies in the debate over whether Ke'ra should be punished for Linea's genocidal crimes.