Penn & Teller: Bullshit! - 7x05 - Lie Detectors- Followmy.tv

Truthfully, the guys are up in arms over the negativity caused in people's lives from the use of a polygraph test, many who will speak in this episode. Included: interviews with a polygraph examiner, a decorated army veteran whose life was 'destroyed' by a polygraph test; a young couple who will be tested by a polygraph; and a former police officer who claims he can train anyone to pass a polygraph test, and tests this technique on two volunteers for the show.