Penn & Teller: Bullshit! Season 7 Episode 5
Episode Title: Lie Detectors
Countries:
USA,
Airing Date: July 23, 2009
Runtime:30 mins
IMDb Rating:
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Penn & Teller: Bullshit!: Polygraphs are used in thousands of investigations and job screenings, but can a machine really detect whether someone is lying? Penn and Teller meet people whose lives were ruined by faulty lie-detector results.