Season 1

Young Ju carries out the interrogation with Bae Min Gyu, the victim's husband, but there is no solid evidence of the crime. Furthermore, his lover, Lee Eun Byeol submits a new alibi for him, and he gets released once ag…

A detective who was chasing the real culprit of a serial murder case faces the hidden secret of his family. Jin-sung is a cheerful yet nasty-tempered detective at Woojin Police Station who fights for justice with all hi…

Jin-woo gets released and Jin-sung manages to obtain crucial evidence to arrest Bae Min-gyu. However, when the arrest warrant was issued, another suspect of the three serial murders appeared. Meanwhile, Jung-sook wants …

On a stormy night, Jin-woo gets into an accident at the seaside. Jin-sung and Young-ju get help from Jung-sook to transfer him to Jinjin Medical Center in Seoul. He may be brain-dead in the worst-case scenario, but Jin-…

Jin Sung receives two videos sent by an anonymous sender, and he’s shocked to discover that the videos show his brother Jin Woo being murdered. Similarly, Ko Young Ju also receives a video of a murder with a warning tha…

The Special Task Force was able to identify the source of the leak about the warrant, but the damage had already been done. The team is to disband, and prosecutors Young Ju and Young Woon face disciplinary action. Howev…

Jin Sung is shocked at discovering Park Ki Young’s room is identical to Young Woon’s room. He alerts Hee Ju, who is still with Ki Young, of his findings. However, it is too late as Hee Ju is kidnapped by Ki Young. With …

Jin Sung arrives at Young Ju's apartment only to find out that he is late and she has already been kidnapped. Now, Jin Sung must locate Ki Young before he harms Hee Ju and Young Ju. Even though the police are looking fo…

Park Ki Young is found dead, and now Ko Young Ju and Cha Young Woon must charge Bae Min Gyu with the serial murders. The chief prosecutor is relieved to see his daughter back safely and wants to close the case, but Youn…

Jung Woo No instructed Dr. Chu to monitor Jin Woo closely. Although Woo No argues it was for research purposes, Jin Sung investigates deeper into the matter. As the investigation progresses further, Jung Woo No becomes …

As the investigation into Jin Woo's death progresses, the case becomes increasingly clear. However, with his family and friends being involved in the case, Young Woon's resolve begins to waver. His family, friends, and …

Marie admits that Park Ki Young initially approached her with evidence of Jin Woo’s murder, prompting the investigation team to delve into Park Ki Young’s past. They question a friend of Ki Young’s mother and uncover ne…

Although Director Yoo uses her influence to wiggle out of the case, the special task force arrests Jung Woo No and Director Yoo to bring them in for questioning. Even though the special task force has gathered numerous …

Director Yoo and Jung Woo No stand in court as the defendants. Prosecutor Ko is missing the decisive evidence. Jung Woo No admits to abducting and locking up Ki Young but claims Jin Woo's case was not a premeditated mur…