6 titles, most popular first
After his fiancée Joo-yun is brutally murdered, secret agent Kim Soo-hyun vows to make her killer pay. Working outside the law, he sets out to hunt down the man responsible, a school bus driver named Jang Kyung-chul who has killed before, and his quest for vengeance turns into a vicious contest between the two men.
Jang Dong-soo, a feared crime boss, survives a brutal attack by a seemingly random serial killer. Detective Jung Tae-suk, whose superior dismisses his serial killer theory, wants Dong-soo's help, and the two very different men end up joining forces to hunt the killer, each for his own reasons.
In 1990, detective Choi Hyeong-goo corners a serial killer who has murdered ten women, but the man gets away after a brutal fight that leaves Choi scarred. Fifteen years later, as the statute of limitations runs out, a man publishes a book titled I Am the Murderer, claiming the crimes as his own.
A year after a disastrous mistake leads to a hospital bombing that kills several SWAT officers, team leader Kang Ki-hyung returns to the NCI, an elite criminal profiling unit. He is immediately pulled into a serial murder case alongside a local violent crimes unit, including hot-tempered officer Kim Hyun-joon, who seems to hold a grudge against him.
Byeong-soo, a small-town veterinarian, hides a violent past as a killer and now lives with Alzheimer's after a head injury. He records his days in a memoir while looking after his daughter Eun-hee. When two young women are murdered nearby, he cannot tell whether he did it, and a chance car crash puts a stranger under his suspicion.
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.
