Inspired by the scientific discoveries of real life body language specialist and criminal investigator Dr. Paul Eikman, the weekly police detective series Lie to Me follows Dr. Cal Lightman (Tim Roth) and his special team of experts as assist local police, government agencies, and federal law enforcement in solving some of their most difficult cases. Dr. Lightman can detect a lie simply by studying a person's face, body, voice, and speech. The simplest gesture can tip Dr. Lightman off. He can read every emotion from, from jealousy, to sexual attraction, to resentment his subject had thought they kept hidden. But as helpful as this talent is in his professional life, it often proves a curse in his personal life. As the leader of The Lightman Group, Dr. Lightman presides over a team comprised of gifted psychologist Dr. Gillian Foster (Kelli Williams), who always has a solid grasp on the big picture, lead researcher Eli Loker (Brendan Hines), who despises the human tendency to lie to such a degree that he practices "radical honesty," and agency newcomer Ria Torres, a true natural in the field of deception detection. Together, The Lightman Group can sniff out any lie, and ensure that justice is served even when the culprit is a master manipulator.
The Lightman Group gets embroiled in the controversial case of a policeman who shot a potentially innocent teenager. Meanwhile, investors who were bilked by a Ponzi scheme are suing The Lightman Group for botching the recovery of their money.