A fiercely competitive police officer and an idealistic prosecutor, former high school classmates, reunite while investigating a nationwide serial murder case, pulling them into both a dangerous pursuit and an unresolved personal past.
Episodes S01E01 Tae-ju’s Comeback To Kangseong 2026-04-20 67m
After his superior is arrested, Kang Tae-ju is reassigned and returns to his hometown of Kangseong following a demotion. On his first day working at the local office, he learns from his coworkers that a former convict connected to one of his past cases has been brutally assaulted. more S01E02 Female Reporter In Police Operation 2026-04-21 64m
Following a tense and uneasy reunion with Si-young, Tae-ju throws himself back into the hunt for the serial killer. As the investigation intensifies, a determined reporter named Ji-won becomes involved, joining the effort to track down the murderer. more S01E03 The Emergence Of New Victim 2026-04-27 66m
After Tae-ju assaults the county governor's nephew in retaliation for Soon-young's attack, he faces the serious threat of losing his position. Meanwhile, a victim's testimony leads him to a troubling discovery more S01E04 The Doubt Toward Gi-beom 2026-04-28 66m
Reeling from the death of Min-ji, who had placed her trust in him, Tae-ju seeks out Si-young and proposes that they work together to capture the serial killer. His return sparks tension and debate among his colleagues, but Tae-ju remains single-minded, determined to continue the hunt. more S01E05 Gi-beom’s Missing 2026-05-04 62m
As suspicion tightens around Gi-beom, evidence seems to seal his guilt. However, more evidence proves to contradict the timeline. As Tae-ju digs deeper, suspicion shifts toward someone with close access. more S01E06 The Handbag That Leads To A Suspicious Man 2026-05-05 63m
Doubt grows over Lee Gi-beom's guilt as his confession is exposed as coerced through illegal detention and abuse. Tae-ju confronts corruption within the investigation while Ji-won uncovers new leads. more S01E07 Another Suspect 2026-05-11 68m
Doubts grow over Lee Gi-beom's confession as Tae-ju uncovers corruption, illegal detention, and a cover-up. Suspicion shifts to Im Seok-man, while new evidence reignites the hunt for the real serial killer. more S01E08 Soon-young's Disappearance 2026-05-12 67m
Im Seok-man is forced into a false confession during a police reenactment, while authorities declare the case solved. Tae-ju grows suspicious and starts uncovering corruption behind the investigation and Gi-beom's death. more S01E09 The Killing Is Not Over 2026-05-18 62m
As buried secrets resurface, Tae-ju begins uncovering a terrifying truth behind the serial killer case everyone believed was solved. A hidden child, suspicious police involvement, and growing distrust push the investigation into darker territory, forcing the team to question everything they thought they knew. more S01E10 The Conspiracy About Hye-jin’s Body 2026-05-19 66m
Tae-ju gets closer to exposing the truth as shocking connections between past victims and the police begin to surface. Trust inside the team starts to crack, while a dangerous suspect makes a bold move that puts everyone at risk. With time running out, the investigation spirals toward an explosive confrontation. more S01E11 The Emergence Of Yeong-beom 2026-05-25 67m
A tragic accident pushes Tae-ju to make a desperate choice as hidden family ties and painful secrets resurface. While Soonyoung fights for her life, old wounds, guilt, and power struggles threaten to destroy everyone connected to the past. more S01E12 The Result Of Seok-man’s Retrial 2026-05-26 66m
In the emotional finale, long-buried truths finally come to light as Tae-ju and Soon-young face the consequences of the past. With betrayal, sacrifice, and grief reaching their peak, the final confrontation forces everyone to choose between revenge and forgiveness - leading to a heartbreaking but unforgettable ending. more 
Park Hae-sooKang Tae-ju
Lee Hee-junCha Si-young
Kwak Sun-youngSeo Ji-won
Seo Ji-hyeKang Soon-young
Song Geon-heeLee Ki-bum / Cha Young-beom
Jung Moon-sungLee Ki-hwan
Bek Hyun-jinKim Man-chun
Yoo Seung-mokCha Mu-jin
Lee Suk-hyeongWoon-hee
Kim Hwan-heeMin-ji
Lee Min-kiCha Yeon-ho