The premise
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.
Horror Vault's take
Two former high school classmates — a driven police officer and an idealistic prosecutor — are thrown back together when a string of murders across the country demands their combined expertise. The case forces them to confront not only a calculating killer but the complicated history that still lingers between them. As the investigation deepens, the line between professional rivalry and personal reckoning begins to blur in dangerous ways.
Content: Depictions Of Serial Murder, Crime Scene Imagery, Potentially Disturbing Thriller Content
Episode Guide
S1.E1 · Tae-ju’s Comeback To KangseongPremiere8.0Apr 20, 2026 · 67 min
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 hi
S1.E2 · Female Reporter In Police Operation8.0Apr 21, 2026 · 64 min
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
S1.E3 · The Emergence Of New Victim7.0Apr 27, 2026 · 66 min
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
S1.E4 · The Doubt Toward Gi-beomApr 28, 2026 · 66 min
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 si
S1.E5 · Gi-beom’s MissingMay 4, 2026 · 62 min
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.
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