Although he had already used the lie detector four times, Zhao Yu was still unsure of how powerful the lie detector really was. Firstly, the accuracy of the lie detector was beyond question! It was precisely because of its amazing performance that Zhao Yu was able to solve the Slaughter Case and determine that the real murderer was Liu Pengfei. However, after testing it on Liu Pengfei and Lin Meifeng, Zhao Yu realized that the power of the lie detector was far beyond his imagination. The lie detector was even able to detect things that someone was unsure of! With such power, Zhao Yu could not help but let his thoughts run wild. He wondered, if he got a random person and used the lie detector to ask them about the case, would it also have the same effect?