Dr. Cal Lightman teaches a course in body language and makes an honest fortune exploiting it. He's employed by various public authorities in various investigations, doing more when the police etc. fail to go the extra mile. So he can afford to constitute a team of his own, which like clients and others has to put up with his mind-games. Written by
He Knows When You're Lying
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Did You Know?
Cal Lightman was American in the original script, and Tim Roth
auditioned with an American accent. It was only after he had been cast that series creator Samuel Baum
decided to make the character British, so that Roth could make the part his own. See more
Dr. Cal Lightman
That's a lie.