Synopsis
Two friends in the past were victims of serious school bullying. One could not resist his trauma, and becomes a serial killer, walking in the path of revenge. Another one tries his best to overcome the trauma and becomes a police detective. He now faces tragic fate to risk his life to capture the serial killer.
Episodes
Season 11
Prelude to RevengeKyung-min leaves a message to Jong-suk at a crime scene. Jina delivers the message to Jong-suk. Thus, Jong-suk and Kyung-min reunite through the message for the first time in twenty years.55m2
First RevengeJong Suk helps Ji Na solve the case. They found out that Kyung Min lived with an alias for a certain amount of time Meanwhile, Kyung Min determines revenge against An Jeong Hee. who tormented him during his school days.44m3
Prelude to the ChaseKyung Min leaves a second message to Jong Suk at the murder scene. Jong Suk realizes that Kyung Min is revenging every perpetrator of school violence. And Jong Suk reminds a terrible memory from the past.57m4
Start of TrackingA special investigation team is launched and Jong Suk and Ji Na chase after Kyung Min. The team investigates the graduates of Shin Suk middle school. Ji Na meets the teacher and Jong Suk goes to Kang Min.57m5
ConfessionJong-suk confesses that he also was one of the victims of school violence to Jina. And a video of Kang-min confined by Kyung-min arrives.57m6
Second RevengeJong-suk and Jina figure out the place where Kang-min is kidnapped. Kyung-min revives Kang-min's memory via quizzes. Kyung-min asks about Chul to Kang-min.53m7
Another FriendJina got to know another key figure, Kim Chul. Jina asks Jong-suk about Chul, but he stays silent. So, Jina searches for the truth by herself.53m8
Third TargetJong-suk figured out the next crime target and rushed to him. The third target sincerely apologizes to Jong-suk. Jina meets Chul's mother to investigate Chul.58m9
Fourth TargetJina gets a step closer to the truth with the handwriting analysis of Chul's suicide note. Jong-suk reveals the identity of "Dog Park" as he looks for Kyung-min's next target.50m10
King of PigsJina heads to the mansion to discover Chul's unperformed project. There she finds a note that Kyung-min left and confronts the truth from twenty years ago.64m11
Past is PresentJina detects the truth behind Chul's death. While Jong-suk's anxiety intensifies, Kyung-min comes into the police station.52m12
Last TargetJong-suk and Jina doggedly track down Kyung-min. Jong-suk, Kyung-min, and other alumni from twenty years ago gather in one place.64m
Prelude to RevengeKyung-min leaves a message to Jong-suk at a crime scene. Jina delivers the message to Jong-suk. Thus, Jong-suk and Kyung-min reunite through the message for the first time in twenty years.55m2First RevengeJong Suk helps Ji Na solve the case. They found out that Kyung Min lived with an alias for a certain amount of time Meanwhile, Kyung Min determines revenge against An Jeong Hee. who tormented him during his school days.44m3Prelude to the ChaseKyung Min leaves a second message to Jong Suk at the murder scene. Jong Suk realizes that Kyung Min is revenging every perpetrator of school violence. And Jong Suk reminds a terrible memory from the past.57m4Start of TrackingA special investigation team is launched and Jong Suk and Ji Na chase after Kyung Min. The team investigates the graduates of Shin Suk middle school. Ji Na meets the teacher and Jong Suk goes to Kang Min.57m5ConfessionJong-suk confesses that he also was one of the victims of school violence to Jina. And a video of Kang-min confined by Kyung-min arrives.57m6Second RevengeJong-suk and Jina figure out the place where Kang-min is kidnapped. Kyung-min revives Kang-min's memory via quizzes. Kyung-min asks about Chul to Kang-min.53m7Another FriendJina got to know another key figure, Kim Chul. Jina asks Jong-suk about Chul, but he stays silent. So, Jina searches for the truth by herself.53m8Third TargetJong-suk figured out the next crime target and rushed to him. The third target sincerely apologizes to Jong-suk. Jina meets Chul's mother to investigate Chul.58m9Fourth TargetJina gets a step closer to the truth with the handwriting analysis of Chul's suicide note. Jong-suk reveals the identity of "Dog Park" as he looks for Kyung-min's next target.50m10King of PigsJina heads to the mansion to discover Chul's unperformed project. There she finds a note that Kyung-min left and confronts the truth from twenty years ago.64m11Past is PresentJina detects the truth behind Chul's death. While Jong-suk's anxiety intensifies, Kyung-min comes into the police station.52m12Last TargetJong-suk and Jina doggedly track down Kyung-min. Jong-suk, Kyung-min, and other alumni from twenty years ago gather in one place.64mCast
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