Penn & Teller: Bullshit! - Lie Detectors

Seizoen: 7 - Aflevering: 5 / 75 - Eerst uitgezonden: 23 juli 2009 - Episode ID: 420601

Polygraphs are used in thousands of investigations and job screenings. Can a machine really detect whether someone is lying? Penn & Teller will meet people whose lives were ruined by the faulty tests.