Behavioral psychologist Dr. Cal Lightman is a top expert in the field of human deception. Working with law enforcement, his firm's employees put their analytic tools to use to uncover the truth in cases involving rape, murder and human weakness. watch
Tim Roth returns as behavioral scientist Cal Lightman, whose keen eye detects when -- and why -- somebody is lying. As Lightman assists law enforcement, he learns that teasing out the truth in his personal relationships can do more harm than good. watch
Tim Roth discusses how his character Dr. Cal Lightman, from Lie to Me, detects deception by studying facial expressions and body language. watch