9/10 is my rating. This is a 2017 South Korean crime drama based on true murders (Hwaseong serial murders). It consists of 16, ~60 minute, episodes.

While on the trail of a killer (they avoided calling them serial killers) in 1986, detective Park Gwang-ho (Choi Jin-hyuk) is attacked and when he comes to and emerges from a tunnel he is in 2016. Those he left behind are left wondering what happened to him. He does not, at first, realize he has time traveled and goes to his station where he encounters Kim Seon-jae 9Yoon Hyun-min) an elite lieutant detective who has more rank than respect from his fellow ditectives (the old made an officer versus worked your way up through the ranks controversy). Shin Jae-yi (Lee Yoo-young) is a consult on the cases as a "visiting"/cooperating criminal profiler. When Gwang-ho realizes he is in a different time he is able to blend in a there was a detective, due to report, who had the same name. No-one, including, Gwang-ho knows what happened to that detective (but it seems he thinks it may be tied to the whole time travel event - they never directly say that but that is what it seems like).

I really like this. It was suspenseful the whole way through. The clues were intriguing and there were lots of plot suprises. The filmography was great as you really got a sense of the different times from the way the way the footage was shot. A great crime drama!

#Tunnel
#ChoJinHyuk
#LeeYooYoung