Poker players look for tells. Polygraphs measure physiological indicators. Movies suggest that there is some magic to looking somebody in the eye. In court, though, judges and lawyers are left to their own devices to determine whether a witness is lying. A clinical psychologist and a former attorney general of the Commonwealth of Massachusetts join experienced trial lawyers and judges to discuss lying and the limits of detecting lying, including verbal and nonverbal cues that aid in assessing the credibility of statements.