Lie Detectors

Penn & Teller: Bullsh**!: Season 7: Episode 5

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Lie Detectors

Episode Details & Credits

SHOWTIME | Air Date: July 23, 2009
Summary: 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.
Genre(s): Comedy, Documentary
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Season 7 Episodes

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