Genre:
Thriller, Crime

Tunnel (Korean: 터널; RR: Teoneol) is a 2017 South Korean television series starring Choi Jin-hyuk, Yoon Hyun-min and Lee Yoo-young. It replaced Voice and aired on cable network OCN on Saturdays and Sundays in the 22:00 (KST) time slot from March 25 to May 21, 2017 for 16 episodes. The series was inspired by the Hwaseong serial murders.

The series was a hit in China. It received a Thai remake in 2019, and an Indonesian remake was announced in 2020

Plot:
  In 1986, Park Gwang-ho works as a successful detective in an enthusiastic manner. However, his life changes when he takes the lead in a serial homicide case and when he passes through a tunnel while chasing the "culprit". He time travels 30 years into the future (2016), where he meets a new partner, Kim Seon-jae, an eccentric elite detective that has a high ability in investigation. When the serial killer continues his "modis operandi" of his murders that happened 30 years ago, the detective duo works together with a Criminal psychologist, Professor Shin Jae-yi to solve the unsolved murders and to catch the murderer.

Review: I got into Korean-Japanese Dramas over couple month ago, mainly Crime fighting ones, this series was my first one, its really good, OST, Characters, the plot. Its really amazing, sort of funny and emotional, Park Gwang-ho is by far my favorite character, this guy really hates criminals, espically the killer who kills women with stockings, I highly, no, STRONGLY RECOMMEND WATCHING THIS!