The is an approach to lie detection that assesses a suspect's physiological response to crime-scene details known only to police investigators.

The correct answer is the guilty knowledge test.
It is a test done on a polygraph or lie detector which is supposed to be absolutely correct as it shows knowledge that only a guilty person might possess. An example would be if a suspect is asked to read the names of several weapons out loud and if the lie detector consistently shows a reaction when it comes to one particular weapon, it means that the suspect knows something he or she is not telling.