4 titles, most popular first
Lee Tang, out of the army for six months, works at a convenience store, leans on his parents and dreams of going to Canada. One night a customer attacks him, and the fight ends with the man dead. Racked with guilt and ready to turn himself in, Tang learns his victim was a serial killer, while detective Jang Nan-gam keeps digging.
Yoo Ryeong joined the police to find her missing twin sister, convinced she fell victim to a serial killer known as the Subway Ghost. Working for the subway police, the rule-bending officer is paired with Go Ji-seok, a by-the-book partner who would much rather stay out of trouble.
Koo Kyung-yi is a former police officer whose world now revolves around games and alcohol. She is drawn back into detective work when she stumbles onto a mysterious string of murders cleverly made to look like accidents, putting her on a collision course with a cunning young killer.
Yook Dong-sik is a timid securities analyst who can't stand up to anyone. After witnessing a murder, he flees with the killer's diary and is hit by police officer Shim Bo-kyung's patrol car, losing his memory. Finding the diary in his hands, he becomes convinced that he himself is a psychopath.
