drama information page featured image of Korean drama Tunnel


Tunnel is about a police detective from 1986 who travels to the present, via a tunnel, to solve a homicide case involving a female university student. He was chasing the suspect in his time when he encounters the tunnel that enables him to travel to the future (2017). After finding out that the case remains unsolved even after 30 years, he works with another detective and a criminal profiler to catch the killer.


General Information

  • Status: COMPLETED
  • Drama Title: Tunnel
  • Other Titles: N/A
  • Genre: Crime, Thriller
  • Director: Kim Kyung-chul, Kim Sung-min
  • Writer: Lee Eun-mi
  • No. of Episodes: 16
  • Broadcast Period: Mar  25 – May 21, 2017
  • Time Slot: 22:00 Korean Standard Time, Sat & Sun
  • Runtime: 60 minutes
  • TV Network: OCN (cable)
  • Production Company(s): 
  • Preceded by: Voice
  • Followed by: Duel

Main Cast & Characters

main cast of Korean drama Tunnel

Choi Jin-hyuk as Park Kwang-ho.  Park Kwang-ho is a cop who runs into a tunnel while chasing a serial killer in 1986. He gets surprised finding out that the year changes to 2017 after passing through the tunnel . 30 years have already passed but the killer has not been caught yet, so he joins the investigation team in the present to solve the case.

Yoon Hyun-min as Kim Sun-jae. Kim Sun-jae is Park Kwang-ho’s partner detective who believes on facts and relies on advanced technology in solving the case. His attitude contradicts that of Park Kwang-ho who is used to working with his gut instincts and street smarts.

Lee Yoo-young as Shin Jae-yi. Shin Jae-yi is a criminal psychology professor who joins the investigation team to profile the serial killer.


The orange and green numbers indicate the lowest and highest ratings, respectively. All values are expressed in %.
Tunnel Viewership Ratings Data
Episode #Broadcast dateNielsen KoreaTNMS
1Mar 25, 20172.7602.9002.9
2Mar 26, 20173.1313.2683.2
3Apr 1, 20174.2284.6894.1
4Apr 2, 20173.5553.2934.3
5Apr 8, 20173.5223.7333.6
6Apr 9, 20174.0423.9223.3
7Apr 15, 20173.8633.9514.1
8Apr 16, 20175.1795.1004.9
9Apr 22, 20174.7004.9424.3
10Apr 23, 20175.4135.5365.4
11Apr 29, 20174.9214.9674.4
12Apr 30, 20175.3755.4805.1
13May 13, 20175.4915.7794.9
14May 14, 20176.2636.9014.7
15May 20, 20175.8436.5105.4
16May 21, 20176.4907.057

Official Posters

Original Soundtrack

  • OST Part 1
    • No. 1: Circle of Life by JK Kim Dong-wook
    • No. 2: Circle of Life (instrumental)

News & Developments


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