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Penn & Teller: Bullshit!: Season 7

7x05 Lie Detectors
TV-MA

  • 2009-07-24T02:00:00Z on Showtime
  • 30m
  • United States
  • English
  • Comedy, Documentary
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.
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