 Come on in, Chris. Why don't you have a seat on that big chair, please? A polygraph examination is an investigative tool to assist the detectives in getting conclusions on cases. Okay, Chris, I'm going to place some attachments on you. We have pneumograph tubes, which regulates their breathing. We have a blood pressure cuff, which registers the heart rate. And then we have a mental attachment that goes to their fingertips and regulates the galvanic skin response. I want you to answer yes or no, please. The polygraph examination accounts for general nervousness. It does not work off of being nervous or not nervous. Is your name Chris? Yes. The results are based upon the reaction to relevant questions. In a murder case, the relevant question would be, did you commit the murder? Are you afraid to ask a question we haven't gone over word for word? No. If you're coming to take a polygraph examination and think you can beat the polygraph exam, you need to realize that it will reveal the truth.