A top detective is reunited with a childhood friend who has since become a leading criminal profiler. Can they join forces to stop a serial killer?
Seasons
Trailer
KBS World (Ch 559) - "Hello Monster" Teaser · Opens on YouTube
A top detective is reunited with a childhood friend who has since become a leading criminal profiler. Can they join forces to stop a serial killer?
KBS World (Ch 559) - "Hello Monster" Teaser · Opens on YouTube
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