Dr. Cal Lightman
Dr. Cal Lightman leads the Lie to Me unit.
In charge of The Lightman Group, he's considered the leading deception expert in the world, a scientist that studies facial expressions and involuntary body language to discover both whether or not you're lying; and the reason for the lie.
The only way three people can keep a secret is if two of them are deadCal
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.