1. Tim Roth ... Dr. Cal Lightman ... Dr. Cal Lightman. Cal Lightman: The protagonist of the story, a middle-aged man, an expert in micro-expression analysis, determining whether the other party is lying or not by observing their body language and facial expressions. He often helps the U.S. government, the FBI, and the CIA to solve cases.
2. Kelli Williams ... Dr. Gillian Foster. Dr. Gillian Foster ... Gillian Foster. Gillian Foster: The second protagonist of the story, a middle-aged woman, the early founder of behaviorist psychology and a famous expert, gifted psychologist, and Leitman's professional partner.
3. Brendan Hines ... Eli Loker ... Eli ... Eli Loker: The lead researcher, a young man who is a good thinker but not a good talker, and never seemed to be a good liar. Specializes in controlling sophisticated computer instruments to aid research.
4. Monica Raymund ... Ria Torres ... Ria. Torres: Young Latin American woman, the first new member of this team, whom Dr. Letterman had unearthed from her position as an airport security guard. She has a talent for reading body language and seems to have been "born" as the perfect "live lie detector" - able to read people's minds without training.
5. Mekhi Phifer ... Agent Ben Reynolds ... Agent Ben Reynolds ... Agent Reynolds: A black man who is involved in solving crimes as the tough-guy agent figure in the syndicate
Hope this helps
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