Coma - Season 1 Episode 3 Necklace

Detective Choi (Im Won Hee) has lost his passion for life, and now pursues money and nothing else. He was in charge of a case 10 years earlier dealing with a girl's disappearance from the hospital. The only clue he holds is the girl's necklace. He's come to the hospital for only one reason: blackmailing the hospital's director. He needs money to raise his daughter and has to stop this hospital from closing at all costs.