Open Case File · S1-ARC5-META
Face to Face
On the outskirts of Seolun Metropolitan City stands the office building of Yeonshin, a contracted operator handling after-hours emergency communications for key public facilities. In the dead of a midwinter night, in the basement cable and materials room, external auditor Kim Byeong-un was found with a stab wound to the chest. Cause of death: acute hemorrhagic shock from excessive blood loss in a short time. He was the only external channel authorized to audit this company, a man famous for refusing any instructions by phone and accepting all correspondence in writing only. That night's late session was his final audit interview. Interrogate the five people who entered and exited the building that night and find the killer.
Scene
operational after-hours emergency communications contractor office building (2F night reception desk, basement cable materials room) · midwinter late night
5 suspects
Nam Jeong-ukComplaint Intake & Escalation SupervisorLate forties, only comfortable in front of paperwork. Taciturn; when asked a question, checks intake number and date before answering. Remembers every case that passed through his hands without missing one, but draws a line saying what happened afterward isn't his responsibility. The voice drawing that line trembles slightly.
Choi Ji-hwanMetropolitan Facilities Management Corporation Night Safety Contracting Section ChiefFast-talking and defensive, early fifties. Tries to redraw his scope of responsibility in every sentence, launches into long org-chart explanations nobody asked for. Tries to hide nervousness with laughter that never lasts long. When numbers and evaluation scores come up, suddenly goes quiet.
Yoon Ga-huiNight Reception Desk Intake Records ClerkSpeaks clearly, early thirties. Has a habit of pinpointing times and sequences precisely, and states plainly when memory is unclear. Chooses words carefully when talking about superiors but ultimately reports what she saw. When audit is mentioned, worries about her own records first.
Lee Gyu-jinYeonshin Operations ConsultantEarly sixties, formal speech never slips. Speaks slowly in complete sentences, never rushes. Has a habit of calling people recipients, lines, cases instead of names; when asked a question, first asks back 'Have you verified?' before answering. Never raises his voice, so in the office he's called Teacher instead of by title.
Jo Tae-sikBuilding Night Custodian (Building Management Contractor)Slow-moving and affable, mid-fifties. When building talk comes up, recites floor-by-floor plumbing but spares words on people talk. Frequently emphasizes his patrol was diligent; when asked about time periods, pauses briefly before answering. Expression hardens when contract talk comes up.
Exhibits
Night Intake Record Viewing Copy
Night intake and forwarding from all four contracted sites are recorded in chronological order without omissions, with no blank fields in the format. What Kim demanded in the final audit was the original master ledger, the primary record kept from the very beginning. This viewing copy is the copy kept at the 2F night reception desk; the original and output equipment were in a storage cabinet at the same desk.
Building Night Communications & Lock System Records
After 22:40 there's a history of external transmission being initiated from this building, and at 23:50 the basement cable and materials room was locked. The external notification line for night intake remained closed from before that until the 04:50 report.
Night Patrol Tag Log and Zone Authority Ledger
The night custodian's patrol tags are recorded continuously from 22:00 to 05:00 without gaps.
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Field Guide
One question = one turn. Examine the clues, shake statements with confrontations, question everyone, then accuse — there is no undo.
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