A local detective who leads the initial homicide investigation using unscientific, instinct-driven methods. Initially overwhelmed and prone to coercive tactics, he gradually adapts to forensic approaches through collaboration. By 2003, he has transitioned to civilian life but remains psychologically haunted by the unsolved murders, realizing the killer blends into ordinary society.
Park initiates the investigation by questioning Baek based on circumstantial association.
Park interrogates the arrested man as a primary person of interest.
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