Open Case File · S1-ARC2-RESCUE
Compartment
Nam Si-yeol, an outsourced fire-safety inspector, was found dead in the morning inside the heat-acclimatization training room of the Danha Fire Department Psychological Recovery Center's training wing. The fire door was locked from the outside, the heat-source control was fixed in maintenance mode, and the cause of death was severe heatstroke from prolonged high-temperature exposure lasting over two hours. Interrogate the five people connected to this center that night and determine whose hand brought this death.
Scene
heat-acclimatization training room in the operational training wing of a fire department psychological recovery center · late summer night
5 suspects
Kim Chan-gyuRecovery Center Equipment & Facilities Maintenance TechnicianMid-forties. Few words, hands move first. Answers questions briefly and when words fail, simply closes his mouth. More comfortable dealing with equipment than people.
Jeong Seon-hoRecovery Center Program Operations DirectorFifties. Fast talker, converses in schedules and numbers. Immediately pulls out documents when accountability is mentioned. Calculation follows behind an affable smile.
Han Da-inRecovery Program Records & Monitoring OfficerEarly thirties. Sensitive about records, chooses words carefully. Tries to distinguish what she saw from what she heard, worries in advance whether her words will put colleagues in difficulty.
Jo Seo-hanCenter Safety & Grievance Reporting OfficerLate forties. Gentle manner of speech, skilled at paperwork processing. Retreats behind 'submitted per procedure' when faced with difficult questions. Does not hold eye contact long.
Na Gyeong-seopNighttime Duty Administrative OfficerLate thirties. Sociable and talkative. Recounts even trivial details of duty hours but glosses over what he failed to verify.
Exhibits
Recovery Program Operations Records & Supply Ledger
A ledger recording session operations and equipment distribution for the center's recovery program, where each scheduled meeting is conducted as one session. Sessions were held as scheduled, and participant receipt signatures and support-team verification are complete without gaps. No operational deficiencies are apparent on the surface.
Training Room Control Panel Operation History & Fire Door Lock Records
Records show the fire door closed and external lock engaged at 22:12, with heat-source control fixed to maintenance mode in the same minute. Normal training termination procedure is to lower heat source first then open the door—the sequence is reversed.
Nighttime Access Terminal Logs
Records show nighttime duty officer Na Gyeong-seop registered as master key holder on duty that night.
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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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