Lie To Me: Who's Who?

Dr. Cal Lightman is the world's leading deception expert, a scientist who studies facial expressions, body language, voice and words to discover if someone is lying and why. Lightman can spot what are known as "microexpressions" - split-second, involuntary facial expressions that reveal what a person is really feeling. Lightman's scientific ability is both a blessing and a curse, as he finds that family and friends will deceive each other as readily as criminals and strangers do.

Lightman heads a team of experts at The Lightman Group, an independent firm that assists federal agencies, local police, corporations and private individuals with their most difficult cases.