Korean dramas are gaining popularity due to their content. If you’re not watching Kdramas, you’re missing out on something great. Kdramas are the best way to escape from the real world and have fun.
Kdramas come in a variety of genres. Not only rom-com but there are a lot of dramas that are thrillers, comedy, mystery, horror, and more. You can find your favorite story in Korean dramas.
If you want to watch some dramas and begin your journey, streaming platforms like Netflix, Viki, iQiyi, and Disney Plus are suitable for you. These platforms have the majority of Kdramas that are known to people.
Best Investigation Kdramas
Besides romance, the best category among dramas is thriller and mystery. Thriller Kdramas have a unique storyline, excellent cinematography, suspense-building background music, and plot twists.

The thriller genre is also categorized into different types such as time travel, revenge, investigation, and other sci-fi plots. Investigative Korean dramas are perfect to binge-watch that include solving crimes.
If you’re looking for some of the best investigation dramas to watch on weekends, here is the list. These dramas include solving murder cases, serial killer, law, action, fighting, suspense, and a lot more.
1. Through The Darkness
The drama will tell the story of South Korea’s first criminal profiler as he struggles to look inside and read the hearts of serial killers during a time when the word “profiling” did not exist. It is based on the 2018 book of the same title.

Cast –
- Kim Nam Gil as Song Ha Young
- Kim So Jin as Yoon Tae Goo
- Jin Seon Kyu as Kook Young Soo
- Ryeoun as Jung Woo Joo
No. Of Episodes – 16
Watch On – Viki
2. Law School
Set in Hankuk University Law School, the drama tells the story of students and professors in the law school who come across an unprecedented case. A professor is arrested as a suspect & his students work together to reveal the truth.

Cast –
- Kim Myung Min as Yang Jong Hoon
- Kim Bum as Han Joon Hwi
- Ryu Hye Young as Kang Sol
- Lee Jung Eun as Kim Eun Sook
No. Of Episodes – 16
Watch On – Netflix
3. Tell Me What You Saw
Hyun Jae used to be a top criminal profiler. He gets vanished after his fiancé’s death. Meanwhile, Soo Young is a police officer in the countryside. She is selected as a rookie detective who will partner with Hyun Jae informally. Together they work to solve cases.

Cast –
- Jang Hyuk as Oh Hyun Jae
- Choi Soo Young as Cha Soo Young
- Jin Seo Yun as Hwang Hwa Young
No. Of Episodes – 16
Watch On – Viki
4. Signal
Park Hae Young witnesses the kidnapping of a girl 15 years ago. 15 years later, Hae Yeong is now a police officer and criminal profiler. One day, he finds a walkie-talkie that allows him to get in contact with Detective Lee Jae Han who is in the past. Together, they solve a series of murders.

5. Tunnel
In 1986, Park Kwang Ho works as a detective. While working he passes through a time portal, which transports him to present-day Seoul. He meets a new partner Kim Sun Jae. They try to find out the serial killer.

6. Bad Guys
To stop violent crimes, the Police Chief asks Detective Goo Tak to form a team consisting of criminals. He gathers his team members: Park Woong Cheol who is a gangster, Jung Tae Soo who is a contract killer, and Lee Jung Moon who is the youngest serial killer.

Cast –
- Kim Sang Joong as Oh Goo Tak
- Park Hae Jin as Lee Jung Moon
- Jo Dong Hyuk as Jung Tae Soo
- Ma Dong Seok as Park Woong Cheol
No. Of Episodes – 11
Watch On – Netflix
7. One Ordinary Day
The drama explores the criminal justice system through the story of an ordinary college student who suddenly becomes a prime suspect in a murder case of a woman & a lawyer who barely passed the bar exam trying to help him.

Cast –
- Kim Soo Hyun as Kim Hyun Soo
- Cha Seung Won as Shin Joong Han
- Lee Seol as Seo Soo Jin
- Yang Kyung Won as Park Doo Shik
No. Of Episodes – 8
Watch On – Viu, Free Streaming Sites
8. Awaken
Jung Woo, the leader of a special task force, ends up investigating a series of murders. Together with his team, they uncover clues that these crimes are somehow related to a tragic event that happened 28 years ago.

Cast –
- Namgoong Min as Do Jung Woo
- Kim Seol Hyun as Gong Hye Won
- Lee Chung Ah as Jamie Layton
- Yoon Sun Woo as Moon Jae Woong
No. Of Episodes – 16
Watch On – Viki
9. Voice
Detective Moo Jin Hyuk after his wife’s death, works with professional voice profiler Kwon Joo, whose father is killed, to solve a different crime, chasing for the serial killer who is responsible for the deaths of their family members.

10. Crime Puzzle
A criminal psychologist is sent to prison for murder, and the criminal profiler who loses her father to the murder conducts interviews with him. These two used to be lovers and now face the unexpected truth to a series of murders.

Cast –
- Yoon Kye Sang as Han Seung Min
- Go Ah Sung as Yoo Hee
- Yoon Gyung Ho as Kim Pan Ho
- Song Sun Mi as Park Jeong Ha
No. Of Episodes – 16
Watch On – Viki
11. Stranger
Hwang Shi Mok, a prosecutor finds him in a murder case. He meets Police Lieutenant Yeo Jin at a murder crime scene. They work together to wipe out corruption at the prosecutor’s office and solve a serial murder case.

Cast –
- Jo Seung Woo as Hwang Shi Mok
- Bae Doo Na as Han Yeo Jin
- Lee Joon Hyuk as Seo Dong Jae
- Shin Hye Sun as Young Eun Soo
No. Of Episodes – 16
Watch On – Netflix
12. Beyond Evil
The story of two fearless lawmen, Lee Dong Shik and Han Joo Won, who break the law to catch a serial killer. In the course of uncovering the culprit’s identity, they question the innocence of everyone involved in the case including themselves.

13. Life On Mars
One day, while investigating a case, Tae Joo has an accident. When he wakes up, he finds himself in the winter of 1988. He is now a detective appointed to work at a police station in a small city. To get back to the present day, he tries to solve the case.

Cast –
- Jung Kyung Ho as Han Tae Joo
- Park Sung Woong as Kang Dong Cheol
- Go Ah Sung as Yoon Na Yeong
- Oh Dae Hwan as Lee Yong Gi
No. Of Episodes – 16
Watch On – Free Streaming Sites
14. Partners For Justice
Baek Beom is a forensic doctor working for 10 years, he is excellent with his work, but does not open his mind to other people. Eun Sol is a rookie prosecutor with a bright personality and comes from a wealthy family. They both try to catch a serial killer.

15. Insider
Kim Yo Han works as a judicial apprentice and always thinking a few moves ahead. He conducts an insider investigation and becomes involved in an unexpected case. This leads to him becoming a prisoner and ends up struggling to try to recover his normal life.

Cast –
- Kang Ha Neul as Kim Yo Han
- Lee Yoo Young as Oh Soo Yeon
- Kim Sang Ho as Mok Jin Hyung
- Han Bo Reum as Annie Stevens
No. Of Episodes – 16
Watch On – Viki
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Wrapping Up
So, these were some of the top investigation Kdramas that are recommended to watch. If you’re bored of the same romance kind of dramas, watch these dramas for a change.
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