We dedicate this Labyrinth to the topic: detecting the lie. The two experienced polygraphists, Nikola Bozinovski and Mirjancho Atanasovski, explain everything we need to know about this device and, through simulation, show us what a polygraph test looks like. In addition, they brought the new Eye Lie Detect device to the studio with which we also did a simulation to show how it works. We also talked about other devices and ways to detect a lie, but also about the myth that we all believe that the polygraph can be faked. We also talked about whether and for which health conditions the device cannot be used, about the idea of testing the customs, as well as about the tricks that people used in an attempt to manipulate the results. The polygraphists explain in detail and scientifically why it is not possible to manipulate the device and say that the polygraph, apart from the security services and criminology, is more often used to clarify private and business issues.