It's not over until the real culprit is caught. The time limit is 60 minutes. Re-investigation begins. The morning of June 17, 2015. Producer Hyunjun Yoon, the producer in charge of the crime scene, was found murdered in the editing room on the third floor of JTBC. Detective Pyo Chang-won, who began the investigation, listed five actors from the crime scene as suspects. At the end of the investigation, a clock needle with blood stains was found in the office of movie director Jang Jin, and the case seemed to be concluded. However, after the case was closed, the assistant detective reveals that Yoon Hyun-jun's cause of death is asphyxiation rather than excessive bleeding, the investigation returns to square one. (thetvdb.com)