Who Is Responsible for Nurse Heo’s Death?

Si Joon comes across Cha Dong Il while investigating what really caused Nurse Heo to take her own life. Not like before, Dong Il actually managed to become a real cop, which was the reason he was at the hospital. Unlike Eun Kang Medical Center, Si Joon thinks the poor system of the hospital is responsible for her death. (Source: Viu)