Late Night Hospital(2011)

Original title: 심야병원

Heo Joon (Yoon Tae Young) is a doctor. His wife was killed by an unidentified man right in front of him. Since the murder, he quit his job at a university hospital and searches out for his wife’s killer. He opens a secret late night clinic to capture the killer. Hong Na Kyung (Ryu Hyun Kyung) is a surgeon at Heo Joon’s clinic.