Roth will play Dr. Cal Lightman, a scientist who pioneered the field of deception detection. The doc is a human lie detector, skilled at reading the human face, body and voice to uncover the truth in criminal and private investigations. The fact that the character can apply the same skills to his personal life complicates his relationships. The science in the show is genuine, based on the work of Dr. Paul Ekman.Read all of Variety’s story on he matter here.