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Penn & Teller: Bull! (2003)

Name: Lie Detectors
Released: 2009-07-23

S7E5 Lie Detectors

Jul 23, 2009 Season 7 Episode 5 Comedy, Documentary

Polygraphs are employed in numerous investigations and employment screenings. But can these machines truly determine if someone is being dishonest? Penn & Teller will connect with individuals whose lives were adversely affected by inaccurate test results.