During the episode, Kwon Il Yong joined the show to discuss a number of cases in which dealt with serial killers. Kwon Il Yong is a legendary criminal profiler of Korea.
With the help of DinDin and Jimin who collected different evidence for the cases presented in front of them but also through their analytical skills, they were able to solve the case/mystery. The two impressed and shocked with their teamwork of reaching the truth halfway each.
Check out the episode to see their analytical skills and how they solved the case!