The book, Tremors in the Blood: Murder, Obsession, and the Birth of The Lie Detector explores the history of the polygraph. We discuss that history with the author, Amit Katwala.

Are the machines "truth serum" or "junk science"?

Did the inventors stand by the reliability? How has the polygraph failed law enforcement and people accused of heinous crimes?

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Impact of Influence is part of the Evergreen Podcasting Network

Seton Tucker and Matt Harris began the Impact of Influence podcast shortly after the murders of Maggie and Paul Murdaugh. Now they cover true crime past and present from the southeast region of the U.S.

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