Discover the story of the polygraph, the controversial device that transformed modern police work, seized headlines and was extolled as an infallible crime-fighting tool. A tale of good intentions, twisted morals and unintended ...See moreDiscover the story of the polygraph, the controversial device that transformed modern police work, seized headlines and was extolled as an infallible crime-fighting tool. A tale of good intentions, twisted morals and unintended consequences. Written by
American Experience on PBS
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