A homicide squad detective, suspected of serial murder, searches for the real culprit.


A young university student Baek Ji-eun gets kidnapped and killed. The investigating detective is Sung-jun and the judge of this case also happens to be his brother, Sung-hoon. Although Sung-jun finds a suspect, the court is not sure…

The jury reaches a verdict that Man-chun is guilty and is sentenced to a lifetime in prison. Just when everyone believes that it is now over, Man-chun manages to escape from his convoy and searches for the jurors to seek revenge. However,…

Sung-jun wakes up after getting hurt from the hostage situation. But the only things that greet him are his parents’ nagging and the news of another woman’s death. While the public believes the second murder is done by a copycat killer,…

The jurors are being targeted as the Joker murderer’s victims. As Ki-nam and Moon-kang learn that the cases are related to Hope Welfare, they collect evidence to find their daughters’ killer. Eventually, their investigation leads to the…

Sung Jun manages to escape from Moon Kang thanks to Eun Ki. As she believes that Sung Jun is not the killer of the Joker Murders, she helps him clear his name. However, the public and the police are certain that he is the culprit. Being…

Sung Hoon believes that Sung Jun is not the culprit. Not because they are brothers, but because the current evidence is not enough, and that new evidence starts emerging. Kwon Yu Na gets attacked by Choi Soon Gil. As he is one of the…

The jurors gather at Kang Young Ki's daughter's wedding while new clues put them into disarray. With everyone gathered, another incident ensues and makes everyone anxious. Was everything planned in detail to get the jurors together from…

The murder at the wedding has everyone scrambling. An Tae Ho gets spotted on surveillance footage, and the police put an APB on him. Meanwhile, Sung Jun chases after An Tae Ho but loses him. Later, a strange text message gets sent to…

Sung Jun and Sung Hoon are too late, and the "Save Me" event ends in tragedy. However, it's still not over. They get confronted by Moon Kang and his men and almost lose their lives. Luckily, the police arrive just in time, but Sung Jun…

Sung Jun finds out Eun Ki's mother had worked as a nurse at Hope Welfare Center. To further investigate, Sung Jun goes to meet her. When he finds her, Eun Ki's mother shakes nervously. That night, Sung Jun senses that Eun Ki could be in…

Sung Jun tracks down Sung Hoon to save Eun Ki, but his suspicions are wrong. However, Sung Hoon's story doesn't add up, and Sung Jun still feels like Sung Hoon is hiding something. While tailing his brother, the man in black suddenly…

Sung Hoon recovers in the hospital after getting stabbed by the culprit. Sung Jun confronts Chief Yeom about Hope Welfare Center and gets told to find out from his mother, Minister Na Guk Hee. Meanwhile, Eun Ki sees Yu Na's dying message…

Eight people, including Eun Ki, suddenly disappear. Could the culprit they've been after all this time be responsible for gathering the eight people in one location? Or could it be a different culprit? Will Sung Jun be able to save the…

The eight people held captive and on the brink of death make it out alive. Sung Jun arrests Jung In Seong and takes him into custody. However, he needs more evidence to connect him to the other serial murders. He looks to Sung Hoon for…

Sung Jun regains his memory. His suspicions against his brother were true. He questions Jung In Seong for more answers to guess Sung Hoon's next move. Meanwhile, shortly after Sung Jun learns through a court sentencing that the presiding…

It turns out Sung Hoon and Sung Jun’s parents are taking a big part in the secret behind Hope Welfare Center. Despite the sorrow, Sung Jun must arrest both of his own parents. After their arrest, Sung Hoon also gets arrested for the…


















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