Tunnel (2017 Korean Drama) - Season 1 (Episode 15 Added)
In Tunnel Season 1, Detective Park Gwang-ho chases a serial killer in 1986 but accidentally travels to 2017. Partnering with modern detectives Kim Sun-jae and criminal psychologist Shin Jae-yi, he uncovers a chilling connection to his past as the murders resume. The series blends crime, time travel, and emotional stakes.
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