Polygraph (cardio-pneumo-psychograph); 1921. Gift of City of Berkeley Police Department. Photo by Jaclyn Nash, National Museum of American History. The Smithsonian’s National Museum of American ...

“What the climate can do to the human body can be very perplexing,” said Mary Ellen O’Toole, a former FBI agent, whose specialty involved working on serial killer cases. O’Toole now heads the George ...