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Season 1 – Tunnel

Play trailer Poster for Season 1 – Tunnel Mar 2017 Mystery & Thriller Crime Play Trailer Watchlist
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Tomatometer 1 Reviews Popcornmeter Fewer than 50 Ratings
A detective follows the trail of a serial killer 30 years into the future and teams up with detectives in that time period to find the culprit.

Critics Reviews

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Jae-Ha Kim Jae-Ha Kim (Substack) 07/27/2023
2/4
Like many of the characters in this time-traveling series, Gwang-ho is a bit of an idiot. Instead of quietly sneaking up to nab the various culprits, he constantly yells out his plans so that the criminals have plenty of time to escape. Go to Full Review Read all reviews

Audience Reviews

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rashid w @RW2021 11/12/2020 You need to get past the first 4 episodes which may seem light but the pay off is worth it as once you hit 5 and 6 it takes off. A lot of depth and emotion that will stick with you in a good way. See more Read all reviews
Tunnel — Season 1

My Rating

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Cast & Crew

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Choi Jin-hyuk

Park Kwang-ho

Yoon Hyun-min

Kim Seon-jae

Lee Yoo-young

Shin Jae-i

Lee Si-a

Shin Yeon-suk

Jo Hee-bong

Jeon Seong-sik

Kim Byung-chul

Kwak Tae-hee

Episodes

Episode 1 Aired Mar 25, 2017 Park Gwang-ho takes the serial murder case that only targets women in Hwayang city, 1989. Even though he has been working hard, the suspect does not leave any evidences; finally, Gwang-ho faces a suspect of a serial murder case in a tunnel. Details Episode 2 Aired Mar 26, 2017 Episode 2 Gwang-ho who has been chasing down the suspect suddenly moves to year 2017, after 30 years from his timeline. After visiting his police station, he becomes the youngest detective of the station; then, a dead body is found at Hwayang City. Details Episode 3 Aired Apr 1, 2017 Episode 3 Gwang-ho figures out the same mark from the dead body that has been leaved on the victims before, and is convinced that this murder case is on the same line of the serial murder case that happens 30 years ago, which is from his original timeline. Details Episode 4 Aired Apr 2, 2017 Episode 4 The head detective Seong-sik tracks down Gwang-ho's behavior since he suspects Gwang-ho; however, Seong-sik notices something that he cannot believe. Gwang-ho tries to find his wife 30 years ago, but cannot find her. Details Episode 5 Aired Apr 8, 2017 Episode 5 Finally, a dead body with seventh mark shows up; which means the serial murder is restarted. Gwang-ho and Seong-sik try to find the real Park Gwang-ho who was born in 1988 to figure out the reason that he comes to the future. Details Episode 6 Aired Apr 9, 2017 Episode 6 Gwang-ho from the past gets interested in a weird identity thief case that one woman reported. After that, Gwang-ho and Seon-jae get close together; however, Seon-jae gets suspicious due to Gwang-ho's weird activities. Details Episode 7 Aired Apr 15, 2017 Episode 7 While Seon-jae is thinking about Gwang-ho's real identity, 1988-born Park Gwang-ho is found dead while he is chased by someone. After noticing this fact, Seon-jae starts a secret investigation about Gwang-ho who is working with him. Details Episode 8 Aired Apr 16, 2017 Episode 8 Due to an unexpected meeting with Seon-jae's father, Gwang-ho notices Seon-jae's real past as a serial murder victim's son. After noticing this, Gwang-ho tells everything about himself to Seon-jae. Details Episode 9 Aired Apr 22, 2017 Episode 9 Gwang-ho hears about his wife Yeon-suk's death and gets shocked; he loses all the passion. However, Seon-jae tells Gwang-ho to catch the suspect Ho-yeong, go back to his original timeline, and save his wife. Details Episode 10 Aired Apr 23, 2017 Episode 10 Even though detectives figures out the suspect of the murderer, they cannot catch Ho-yeong. Rather than catching him, the truth behind the serial murder case is uncovered and a shocking real identity of murderer is also showed. Details Episode 11 Aired Apr 29, 2017 Episode 11 After attacked by Ho-yeong, Jae-i survives from him but suffers from the trauma of attack. Gwang-ho finally figures out his daughter Yeon-ho, and Seon-jae volunteers to be the next bait to lure Ho-young after seeing Jae-i's suffering. Details Episode 12 Aired Apr 30, 2017 Episode 12 A shocking news of Ho-yeong's suicide is send to the station. While inspecting his suicide, Gwang-ho notices that Ho-yeong meets Jin-woo right before his suicide. Then, Gwang-ho figures out a new evidence that can end this continuous serial murder. Details Episode 13 Aired May 6, 2017 Episode 13 Seon-jae tells Jae-i about Gwang-ho's real identity, but Jae-i gets confused by the truth. Whereas Gwang-ho finds out the real murderer Jin-woo and tries to catch him; however, he goes back to the past--his original timeline. Details Episode 14 Aired May 7, 2017 Episode 14 Gwang-ho, who goes back to the past, comes back to the future right before capturing Jin-woo. Finally, detectives captures Jin-woo and investigates his surroundings for 48 hours. Whereas Gwang-ho meets Jae-i once again. Details Episode 15 Aired May 20, 2017 Episode 15 Jae-i remembers the critical evidence of the case: a fountain pen. However, Jin-woo kidnaps her since Jin-woo wants to take away the most precious thing from Kwang-ho. After noticing the kidnapping, Kwang-ho chases him down. Details Episode 16 Aired May 21, 2017 Episode 16 Jin-woo tries to kill Jae-i as a revenge to Gwang-ho, yet he fails. Jae-i survives from him, and detectives captures Jin-woo, who is the real murderer of 30-year serial murder case. Gwang-ho decides to go back to his original timeline. Details

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Tunnel — Season 1

Tunnel Tunnel Tunnel View more photos

Season Info

Director
Shin Yong-hwi
Screenwriter
Lee Eun-mi
Network
OCN
Genre
Mystery & Thriller, Crime
Original Language
Korean
Release Date
Mar 25, 2017