S1E79 — Chief Investigation Officer Yoo (2)

On the verge of losing his underperforming team, Chief Inspector Yu strives to solve a mysterious murder case. To do so, he gets help from Korea’s very first profiler, Kwon Il Yong. Now that the team is capable of scientifically approaching the case, the chief and his fellow detectives carefully go over the crime scene in hopes of finding the culprit.