In 1990, detective Choi Hyeong-goo hunts down a serial killer who has killed 10 women since 1986, and whom he suspects is responsible for the kidnapping of another.

Lee continues to insist that he is the real killer, and another television debate is arranged between him, Choi, and J to settle the matter.

The debate draws thousands of protestors and fans, as well as Han, who carries a pen filled with snake venom, intent upon using it on the real killer.

J arrives and directs everyone's attention to a camera crew who finds his 11th victim, Soo-yeon, proving he is the real killer.

Lee is actually Jung Hyun-sik, who faked his death with Choi's help and underwent plastic surgery to assume a new identity.

They worked together to lure out the real killer, with Choi writing the book with his knowledge of the crimes, and Lee acting as the "face."

Choi plays the tape of Soo-yeon's demise, revealing the footage was shot in that exact date in 1992, and that he has 14 minutes before the statute of limitations expires.

The enraged Choi attempts to kill J, but J escapes the TV station, leading to another intense chase scene.

As J is escorted away in handcuffs, both Jung and Han Ji-soo try to kill him, but Choi stabs J with the pen, avenging the victims and preventing other people from committing murder.

The film received positive review ratings on local Internet portals, and sold 1.2 million tickets in its first week of release.

[15] The film was remade in 2017 as Memoirs of a Murderer by Yu Irie, starring Hideaki Itō and Tatsuya Fujiwara in the lead roles.