(CNN) — A polygraph, or lie detector test, given to porn star Stormy Daniels in 2011 shows that she gave truthful answers to the questions: "Around July 2006, did you have vaginal intercourse with ...

Discover how lie detectors work. Polygraphs pick up on baseline patterns of truthfulness, identifying deviations as potential deception. Can you outsmart the system by always lying? Warning issued as ...

In February of 1994, the FBI arrested Aldrich Ames, who had been a CIA employee for 31 years. Ames was arrested and charged with espionage. He was a Russian spy. For nine years, he had been passing ...