Tunnel (2017)

Both are crime dramas where the lead detectives and their colleagues try to solve an older case whilist going against their superiors.
Tunnel has a fantasy and time travel element, while The Good Detective has a more realistic setting

- Yoon Hyun Min is a main lead in both dramas
- both dramas deal with crimes against women
- both deal with law and law enforcement

Timeline Changes from 1988 to 2017
Thriller/Mystery
Serial Killer on the loose from the past to catch in the future
it will give you the vibes of what will happen next if the timeline changes

Both are crime dramas. Both are science-fiction. In Tunnel the main guy is looking for his kid. In Duel the main guy is searching for his missing daughter. However the two have completely different storylines. Tunnel has the time traveling aspect and Duel has the clone aspect.

Both dramas feature time travel to a different era.
In Tunnel, granted it is just from 1986 to present.(still a big culture shock)
In Faith it is to the Goryeo era from the present.
Both bring a little star power with their Brave and Manly leading men.
Faith's cast is lead by Lee Min Ho playing a General of the army and bodyguard to the King.
Tunnel's cast is lead by Choi Jin Hyuk playing a tough Detective who is not afraid of tackling a dangerous criminal. He is also a respected sunbae for his less experienced partners.
Both have a lead who is faithful while longing for their loved one after being separated by time.
Both are directed by Sin Yong-hwi
Both are really good dramas worth watching.

Where they are different:
Tunnel has a serial killer crime story and slightly dated outfits.
Faith has political intrigue, medicine, and of course the long hair and historical dress.

Tunnel and thesus no fune have many similarities which become more evident as the the drama progresses..time travel is the main theme in both of them..and importance of family bonds is strongly emphasized ..with the family members willing to do anything to protect their family.Both share beautiful plot and amazing acting.

Detective Park Gwang-Ho travels forward in time when he enters an eerie tunnel to catch a serial killer. He quickly learns that the culprit has begun hunting for new victims in the new period.

Similarities are that both dramas essentially revolve around old cases that were never solved. Both having a police force setting that revolves around crime solving.

Both kdramas are mystery/thriller/detective type with a fantasy element to them.
While Tunnel moves between different times, Missing moves between two worlds.

Both deal with time travel/time dimension hopping

Both have ML in Police/Detective work

Parents love for their child is shown here/Both influence our ML

The three main characters (ML/2nd ML/FL) are all connected to each other like Tunnel

Both Family/Human Sci-Fi Drama

Time Travel element is the only similar trait. If you like time travel you'll enjoy both.
Live up to your name Dr Heo has a lighter feel to it and a nice amount of time travel. The actors have a good chemistry and I really enjoyed the ending. Both of these are my favourite TT dramas.

Both dramas explore the time-traveling concept, have romance and crime. They have the same vibe. Both are quite dark, but have funny and cute moments as well. Both very touching.

Both are set upon cold cases. Both are very emotional and great OSTs especially in Cold Case: Shinjitsu no Tobira.