About
A homicide squad detective, suspected of serial murder, searches for the real culprit.
Cast
Ok Taec-yeon
as Ryu Sung-jun
Ha Seok-jin
as Ryu Sung-hoon
Jung Eun-ji
as Jo Eun-gi
Park Ji-bin
as Jung In-seong
Jeong In-gi
as Yeom Gi-nam
Kim Pub-lae
as Baek Moon-kang
Kang Na-eon
as Kwon Yu-na
Oh Seung-yun
as Chef Charles
Choi Hong-il
as Ryu Il-ho
Jo Kyung-sook
as Na Gook-hee
Baek Seoung-hee
as Yeom Hye-jin
Cho Seung-yeon
as Bae PD / Bae Cheol-ho
Kim Ha-kyoon
as Kang Yeong-gi
Choi Jae-sup
as Choi Sun-gil
Chae Dong-hyeon
as An Tae-ho
Song Yi-hyun
as Collegiate Judge
Kim Min-seok
as Kim Suk Goo
Seol Woo-in
as Clerk
Seasons
Episodes
Season 1
Crazy Dog
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 whether he is the real culprit or not. As the trial proceeds with a jury, the case draws a lot of attention.
You Should Give Up Hope as Long as You're in Here
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, his vengeance fails and the truth behind the Joker Murder reveals itself.
The Children Who He Abandoned
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, Sung-hoon gets a hunch that Man-chun is innocent and that there truly is someone else behind the Joker cases.
A Very Old Future
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 idea that Ryu Sung-jun might be Jung Yoon-jae. Believing this as a fact, Moon-kang kidnaps Sung-jun.
A Certain Promise
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 chased by his own colleagues, he must prove that he did not kill anyone.
The Enemy Is Near
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 suspects in Yeom Hye Jin’s murder, Sung Jun begins digging into him deeper.
The Children Who Are Called by Numbers
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 start?
Murder Notice
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 everyone, making the situation dire.
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