Gatekeeper
John Sullivan talked about his book, Gatekeeper: Memoirs of a CIA Polygraph Examiner, published by Potomac Books. He described his three… read more
John Sullivan talked about his book, Gatekeeper: Memoirs of a CIA Polygraph Examiner, published by Potomac Books. He described his three decades with the Central Intelligence Agency as a polygraph expert. He discussed some of the investigations in which he participated and assessed the usefulness of the polygraph machine today. After his presentation he responded to audience members' questions. close
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