He Yichen, a doctor of modern criminal psychology, passed through the Song Dynasty in an accident and became an inconspicuous working apprentice in Qinghe County. In this era, murders occurred frequently, officials were ignorant, and unjust, false, and wrongful cases piled up. With the help of modern criminal investigation knowledge, He Yichen discovered a shocking secret from a seemingly ordinary corpse and solved the cold case in just a few days. The dignitaries in the DPRK, Jianghu forces, and foreign spies have all focused on this seemingly harmless little work. On the surface, he pretends to be stupid, but in fact, he is careful at every step, using advanced methods such as fingerprint identification, blood stain analysis, and psychological profiling to make it impossible for the real murderer to escape. When everyone thought he was just lucky, He Yichen had already uncovered a major rebellion case involving court officials through clues. Goldfinger's "criminal vision" - fragmentary images that can briefly recall the scene of the crime, giving him an advantage in solving the case. However, every time a case is solved, there will always be a bigger mystery left behind, as if there is an invisible hand controlling everything.
