Terminator: The Sarah Connor Chronicles, Season 1

[Cameron kills Enrique while he tries to explain his reputation as a police informant]

Sarah Connor:
Why would you do this? Didn't you hear what he said, we don't know, we don't know…

Cameron:
He was possibly lying.

Sarah Connor:
Possibly? You just executed him on possibly? He had a family! Why would you do this?

Cameron:
Because you wouldn't.

[Sarah slaps Cameron with a pistol]

Sarah Connor [Angrily]:
How do you know what I would and would not do? You don't know me, you don't know me! And you don't know my son, not John, not my Johnny. You don't know what I would and wouldn't do, I don't even know what I would and wouldn't do. I wake up this morning and you tell me…I don't know anything anymore, I don't even remember what my name is…

Cameron [Obliviously]:
Sarah Connor.