One of the most controversial tools used by investigators is the lie detector. It’s used often to intimidate suspects and sometimes it’s responsible for confessions, real and false. Author Amit Katwala explains how the lie detector’s origin is grounded in deception, abuse, and of course murder. Buy my books: katewinklerdawson.com    If you have suggestions for historical crimes that could use some attention, email me: info@tenfoldmorewicked.com      Follow me on social: @tenfoldmore (Twitter) / @tenfoldmorewicked (Facebook and Instagram)      2023 All Rights ReservedSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.