There's a great deal of chemistry between Cal Lightman and Gillian Foster, a member of his team.

She's recently divorced and a gifted psychologist. To determine the truth, Gillian focuses on voice, words, and psychology, tools  Lightman needs for insight into human behavior.

Gillian Foster Quotes

Cal: What's your content analysis of the mother?
Gillian: She was definitely concealing something. When I asked her about Miss McCartney, she started referring to her as 'that woman'.
Cal: As in, 'I did not have sexual relations with that woman, Miss Lewinsky'

Gillian: Do you still have that note, that I brought you? I want it for my office.
Cal: (handing over the note) You really are a pack rat.
Gillian: You could have just told me what this was for.
Cal: No. You're a terrible liar.
Gillian: Normal people think that's a good thing.

Lie to Me Quotes

The only way three people can keep a secret is if two of them are dead


Weil: You haven't done enough muck-raking for one day?
Ria: Sir. We don't think you were doing anything sexual at that club, because, I believe this escort, Melissa, who you paid for time with-
Weil: What about her?
Ria: She's your daughter.