Plot Analysis Summary
An investigation into serial murders becomes a bleak study of institutional failure, lost evidence, and the unknowable face of evil.
Story Structure — 6 Plot Phases
A Crime Beyond Their Methods
Two murders expose the limitations of the local investigation. Park relies on intuition and coercion while weak forensic procedures produce an unreliable suspect.
Key Events
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First Bodies Discovered — Two women are found raped and murdered, overwhelming the inexperienced local detective. Characters: Detective Park Doo-man
Location: Outskirts of the town
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Improper Crime Scene Work — Evidence is poorly collected while modern forensic technology is largely unavailable. Characters: Detective Park Doo-man
Location: First murder scene
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Baek Becomes Suspect — Park questions Baek after learning he followed one victim around town. Characters: Detective Park Doo-man, Baek Kwang-ho
Location: Local police station
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Forced Confession — Baek is beaten and forced to confess despite weak supporting evidence. Characters: Detective Park Doo-man, Baek Kwang-ho
Location: Interrogation room
Patterns Beneath the Rain
A scientifically trained investigator challenges the local approach and helps identify a larger pattern. The recurring song, rainy nights, and red clothing point toward a systematic killer.
Key Events
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Seoul Detective Arrives — A scientifically trained detective arrives, creating tension over investigative methods. Characters: Detective Park Doo-man
Location: Local police station
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Third Victim Found — Reviewing reports leads to the decomposed remains of an earlier victim. Characters: Detective Park Doo-man
Location: Burial site near town
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Pattern of Rain and Red — The investigators identify rainy nights, red clothing, and a recurring obscure song. Characters: Detective Park Doo-man
Location: Police station
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Gypsum Mine Murder — A woman is murdered near the mine despite a police stakeout. Characters: Detective Park Doo-man
Location: Gypsum mine
Witnesses and False Leads
A failed arrest and contradictory witness accounts weaken the investigation. The detectives discover that the case depends on fragile testimony and an endangered survivor.
Key Events
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Masturbating Man Arrested — The detectives interrupt and apprehend a man near the crime scene. Characters: Detective Park Doo-man, Suspect
Location: Latest crime scene
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False Confession Unravels — The arrested man's improvised confession fails to match the murder details. Characters: Detective Park Doo-man, Suspect
Location: Police station
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Outhouse Clue Emerges — The suspect mentions a figure emerging from school outhouses, matching local girls' accounts. Characters: Detective Park Doo-man, Suspect
Location: Local school
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Survivor Identifies Contradiction — A traumatized surviving victim gives details excluding the arrested man. Characters: Detective Park Doo-man
Location: Outhouses near the school
The Witness Is Lost
The investigators focus on a mine clerk connected to the song requests. Baek's possible eyewitness knowledge is recognized too late, and his death permanently damages the case.
Key Events
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Investigators Rejoin Forces — After conflict, the investigators agree to work together when another murder occurs. Characters: Detective Park Doo-man
Location: Police station
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Mine Clerk Becomes Suspect — A mine clerk is linked to the recurring song and the timing of the murders. Characters: Detective Park Doo-man
Location: Mine office
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Baek's Eyewitness Clue — Reexamining Baek's words suggests he witnessed one murder as it happened. Characters: Detective Park Doo-man, Baek Kwang-ho
Location: Restaurant run by Baek's father
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Baek Dies During Pursuit — Baek flees during the pursuit and is killed by a passing train. Characters: Detective Park Doo-man, Baek Kwang-ho
Location: Railway crossing
Proof That Cannot Decide
Scientific testing is finally attempted, but the result is inconclusive. Another murder and a failed act of violence leave the killer unidentified.
Key Events
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DNA Sample Sent Abroad — A semen sample is sent to the United States because local testing is unavailable. Characters: Detective Park Doo-man
Location: Coroner's office
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Another Rainy Night Murder — The killer selects and murders a schoolgirl while an investigator loses surveillance of the main suspect. Characters: Detective Park Doo-man
Location: Secluded wooded area
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DNA Test Inconclusive — The DNA result neither confirms nor excludes the mine clerk as the killer. Characters: Detective Park Doo-man
Location: Police station
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Failed Shooting — A detective tries to shoot the suspect, but Park stops him and the suspect leaves. Characters: Detective Park Doo-man
Location: Road outside the police station
The Ordinary Face
Years later, Park revisits the original crime scene. A child's description suggests that the killer may look entirely ordinary and remain hidden within society.
Key Events
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Seventeen Years Pass — By 2003, the crimes remain unsolved and Park has become a civilian businessman and father. Characters: Detective Park Doo-man
Location: Town
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Ordinary Face Revelation — A young girl describes a remembered man as completely ordinary, leaving Park to face the killer's anonymity. Characters: Detective Park Doo-man
Location: First crime scene