Ghost (2012 - 2012)

The son of a high-ranking police officer, Kim Woo-hyun, graduates from the academy with flying colors and joins the Cyber Security Division. As part of an international team, he helps catch criminals from the dark web. However, during a recent operation, an elusive hacker known as "Aid" destroys crucial digital evidence, undermining the authority of the Korean police. Now, apprehending this invisible hacker becomes a matter of honor for Woo-hyun's team. The trail leads them to the apartment of famous actress Shin Hyun-jung. Before the team arrives, the star falls from a high-rise window. According to the official version, the beloved celebrity took her own life after enduring severe cyberbullying amidst a sex scandal. But our hero knows for sure that the case involves a ghost hacker.