Doctor Detective

Do Jun-eun, a genius epidemiologist, had her medical license suspended after an incident and now earns a living by helping cover up workplace injuries. UDC (Undiagnosed Disease Center) Director Gong Il-soon recruits Jun-eun to the UDC, but she refuses to open up. ©SBS

Before she can say goodbye, Haran's body is taken away by TL Group. Jun-eun entrusts the case to UDC's Ho Min-gi and heads to the office where Haran worked. The media reports Haran's death as self-inflicted due to alcohol poisoning. Suspecting Haran was poisoned by hazardous substances, Jun-eun teams up with Min-gi to obtain a plastic water bottle as evidence disproving the alcohol theory.©SBS

Mingi, convinced Joon-woong's UDC employment is confirmed and he'll be promoted to team leader, is in high spirits alone. Amidst the grief, Haran's funeral takes place, but her colleague Do-hyun is still missing. Meanwhile, a case involving a baker's asthma lands at UDC. Learning Jun-eun is team leader, Min-gi declares he'll quit. Il-sun tries to persuade him, bringing up his father.©SBS

Joon-woon, targeted by someone, suspects Tae-yong's involvement, but there was clearly another perpetrator present who wasn't part of his group. Released from custody, Min-gi throws himself into investigating the bakery. That night, Joon-woon receives a mysterious phone call. Min-gi discovers asthma-inducing substances at his side job at the furniture factory.©SBS

Jun-eun is rescued by Tae-yeon at the last moment and rushed to the hospital. Learning Mo Seong-guk, head of TL Oshim, is behind Jun-eun's attack, Tae-yeon storms into Oshim to warn him, but Seong-guk retorts it was Chairman Chee-gon's order. To clear Do-hyun's suspicion, Joon-eun searches for mercury evidence and detects it in hair found at Harang's home.©SBS

Jun-eun is troubled by Tae-yong's request to leak the Nam-il site information to the press in exchange for inside information. Barred from the field, Jun-eun secretly plans a strategy with Min-gi, successfully obtaining proof that Do-hyun suffered mercury poisoning. Concluding mercury poisoning was TL Metro's responsibility, UDC members raise a celebratory toast.©SBS