Chinese Title: 幽霊
Cast: So Ji-Sub, Lee Yeon-Hee, Uhm Ki-Joon, Kwak Do-Won, Song Ha-Yoon, Daniel Choi, Jung Da-Hye
Synopsis: Kim Woo-Hyun (So Ji-Sub) is the only son of a high ranking police officer. Woo-Hyun entered the police academy ranked first and graduated from the academy ranked first. As a detective, he then joins the cyber investigation department. Woo-Hyun then works to reveal the secrets of those that hide within the cyber world.