In the SBS tree drama `` Dr. Detective (Director Park Jun-woo, Play Song Yoon-hee) '', which was broadcast on the 15th, Choi delivered a threatening letter to Choi (Min. Ryu). Jung said, “Don't doubt me, don't use me” if you want to drive yourself as an intimidator, and Choi Min said, “Prove yourself that this envelope was not sent by you.” Taeyoung (Lee Gi-woo) took Jung-eun (Park Jin-hee) to his home, and the hair in the threatening letter was called Serine. Hearing this, he said, "Surine will take me away." Taeyoung said, "Surine will keep me until the threat letter is resolved. So let go." Jung said, "I'll solve this thing, so keep me safe." Taeyoung returned to the hospital and told Choi that "I will protect my child and I will not let it go." Jung-eun went to Sunsun. "I need help," he said in a threatening letter. "I need your help." Then, she told her daughter, Serine, that she was at risk.
The next day, Il Sun returned to UDC with Jung. Il-sun issued a threatening letter presumed to be a victim of TL accidents. Mingi replied, "Are we in charge of TL work?" Jung Eun confessed the secret, "It's my personal case," and TL Choi Tae-young, the former husband, has a daughter in between. "TL received a letter, my daughter's hair came together, I need help UDC," he appealed with tears. Ilson gathered UDC staff and said, "We're involved in a TL case." Il-sun ordered, "TL victims, I can not let terrorists, rescue victims." Each team teamed up to dig through the industrial accidents covered by TL. Min and Jung visited an elderly man. The UDC also analyzed the letters of the blackmailer.
Jung-eun was contacted by Choi, but her daughter, Serin, was absent. Jung replied, "Where is Serin?" Choi Min said, "If you don't want to be treated like this, bring a result." Still, the suspect was threatened. UDC told the reality, "The victims are not in danger of threatening, they are already dead or dying." Jung said, "Will labor cost cheaper?" Ilsun said, "In Korea, five people a day die from industrial accidents, both adults and children die."
Jung received the news of Kim Yang-hee, who died in an industrial accident. Jung-eun hurried back to the place, recalling what Mingi said as a 'waste factory'. Jung uncovered a scene and encountered an industrial victim who fell down and died. Seeing him as a cold carcass, Ms. Jung was again tied with feet before the truth. On the other hand, Doctor Detective is a drama about a new medical investigation containing doctor detectives who solve the social irregularities of industrial sites.
