The Best Thriller K-Dramas
From intriguing mysteries to psychological thrillers, these are the K-dramas worth watching when you're in the mood for a story that keeps you guessing.
Updated September 2026 · 8 min read · 12 curated picks
Do you love mystery or the suspense of not knowing what will happen next? There's nothing better than a K-drama that keeps you guessing, makes you question who you can trust, and has you changing your theories with every episode.
That's what makes thriller K-dramas so addictive. Just when you think you've figured something out, another clue or twist comes along and changes everything. From crime investigations and serial killers to psychological thrillers and stories filled with unexpected twists, these K-dramas know how to keep the tension going.
So if you're looking for your next thriller to get obsessed with, here are some of the K-dramas worth watching.
These dramas aren't ranked in any particular order. Every drama has something special to offer, so explore the list and find the one that feels right for your next watch.
Signal
- Year
- 2016
- Cast
- Lee Je Hoon, Kim Hye Soo
- Episodes
- 16
- Watch on
- Netflix, Amazon Prime
Fifteen years after witnessing a girl's kidnapping as a child, Park Hae-young is now a police officer and criminal profiler. When he discovers a mysterious walkie-talkie that connects him to Detective Lee Jae-han in the past, they work together to solve cold cases and bring the truth to light.
Why we recommend it
Signal combines crime investigation with a fascinating time-travel mystery. Watching Hae-young and Jae-han work together across different timelines makes every case feel unpredictable, while their attempts to change the past create consequences that continue to unfold in the present.
Streaming availability varies by country, so check your local streaming platforms.
Beyond Evil
- Year
- 2021
- Cast
- Shin Ha Kyun, Yeo Jin Goo
- Episodes
- 16
- Watch on
- Netflix, HBO Max
When a string of gruesome killings resembles an unsolved serial murder case from 20 years earlier, demoted detective Lee Dong-sik and elite detective Han Joo-won are forced to work together. As they search for the killer, they begin questioning everyone connected to the case, including each other.
Why we recommend it
Beyond Evil is a psychological thriller that makes almost everyone feel like a suspect. Dong-sik and Joo-won's tense relationship keeps you questioning their motives, while the investigation slowly uncovers secrets buried within the seemingly quiet town of Manyang.
Streaming availability varies by country, so check your local streaming platforms.
Mouse
- Year
- 2021
- Cast
- Lee Seung Gi, Lee Hee Joon
- Episodes
- 20
- Watch on
- Viki, Amazon Prime
What if we could identify psychopaths before they ever committed a crime? As a ruthless serial killer terrorizes the country, rookie police officer Jung Ba-reum comes face-to-face with the murderer, surviving an encounter that changes his life forever.
Why we recommend it
Mouse is the kind of thriller that constantly makes you question what you think you know. The serial killer investigation is only the beginning, as the story explores psychopathy, morality and whether someone can truly be born evil.
Streaming availability varies by country, so check your local streaming platforms.
The Worst of Evil
- Year
- 2023
- Cast
- Ji Chang Wook, Wi Ha Joon
- Episodes
- 12
- Watch on
- Disney+, Hulu
A countryside detective goes undercover to infiltrate a ruthless criminal organization controlling the illegal drug trade across Korea, China, and Japan, but the mission becomes complicated when his wife joins the same operation.
Why we recommend it
The Worst of Evil stands out for its intense undercover story and constant tension. Watching Jun-mo get deeper into the criminal world while struggling to protect his identity, his wife, and himself makes every episode increasingly unpredictable.
Streaming availability varies by country, so check your local streaming platforms.
The Glory
- Year
- 2022
- Cast
- Song Hye Kyo, Lee Do Hyun
- Episodes
- 16
- Watch on
- Netflix
Years after suffering severe school bullying, a woman carefully puts a revenge plan into motion against the people who destroyed her youth, using their own lives and relationships to bring them down.
Why we recommend it
The Glory stands out for its slow-burning revenge story and the careful way Dong-eun's plan unfolds. Watching her confront the people who destroyed her youth, while uncovering the lives and secrets they've built since then, keeps the story tense and compelling.
Streaming availability varies by country, so check your local streaming platforms.
Flower of Evil
- Year
- 2020
- Cast
- Lee Joon Gi, Moon Chae Won
- Episodes
- 16
- Watch on
- Netflix, HBO Max
A devoted husband and father hides a dark secret about his identity, but his carefully built life begins to unravel when his detective wife investigates a series of murders connected to his mysterious past.
Why we recommend it
Flower of Evil keeps you questioning who you can trust as Ji-won investigates the man she loves. The mystery creates constant tension, while their marriage adds an emotional layer that makes every discovery hit harder.
Streaming availability varies by country, so check your local streaming platforms.
Strangers from Hell
- Year
- 2019
- Cast
- Yim Si Wan, Lee Dong Wook
- Episodes
- 10
- Watch on
- Viki
Yoon Jong-u moves from the countryside to Seoul after getting a job through his college friend and settles into the cheap Eden Gosiwon. But as strange events begin happening and his unsettling neighbors become increasingly disturbing, Jong-u starts to fear the people living around him.
Why we recommend it
Strangers from Hell creates a constant feeling of unease without relying on nonstop action. The cramped gosiwon and its disturbing residents make Jong-u's new home increasingly terrifying, while his growing fear leaves you questioning what is really happening around him.
Streaming availability varies by country, so check your local streaming platforms.
Stranger
- Year
- 2017
- Cast
- Cho Seung Woo, Bae Doona
- Episodes
- 32
- Watch on
- Netflix
Hwang Si-mok, a prosecutor who lost his ability to feel emotions after undergoing brain surgery as a child, becomes known for his sharp logic and refusal to accept corruption. After encountering a murder victim, he joins forces with Lieutenant Han Yeo-jin to investigate the case and uncover corruption within the prosecutors' office.
Why we recommend it
Stranger is a slow-burning thriller that puts its investigation and characters at the center of the story. Si-mok's emotionless logic and Yeo-jin's determination make them an unlikely but compelling team as they uncover corruption and a much larger conspiracy behind the murder.
Streaming availability varies by country, so check your local streaming platforms.
Through the Darkness
- Year
- 2022
- Cast
- Kim Nam Gil, Jin Sun Kyu
- Episodes
- 12
- Watch on
- Netflix
Based on real cases and the experiences of South Korea's first criminal profiler, Through the Darkness follows Song Ha-young as he joins a newly formed criminal behavior analysis team investigating a series of brutal murders in 1990s Seoul. As he studies the minds of killers, he must also confront the emotional toll of his work.
Why we recommend it
Through the Darkness takes a more grounded approach to crime than most thrillers. Instead of focusing on dramatic twists, it explores how investigators study the minds of serial killers and the emotional toll of trying to understand them.
Streaming availability varies by country, so check your local streaming platforms.
Moving
- Year
- 2023
- Cast
- Ryu Seung Ryong, Han Hyo Joo
- Episodes
- 20
- Watch on
- Disney+
Three high school students with extraordinary abilities try to live normal lives while hiding their powers. As their parents work to protect them from those who want to exploit their abilities, they uncover secrets from their parents' past.
Why we recommend it
Moving does a great job balancing superhero action with an emotional story about parents and their children. The students' struggles are compelling on their own, but learning what their parents went through to protect them gives the story much more emotional weight.
Streaming availability varies by country, so check your local streaming platforms.
My Name
- Year
- 2021
- Cast
- Han So Hee, Park Hee Soon
- Episodes
- 8
- Watch on
- Netflix
After her father's murder, Yoon Ji-woo joins a powerful crime ring and infiltrates the police under its leader's orders, determined to uncover the truth behind her father's death while caught between the two sides of the law.
Why we recommend it
My Name wastes little time getting into its action but its strongest element is Ji-woo's transformation as she becomes increasingly trapped between the police and the criminal organization. Her fight for the truth keeps the story intense from beginning to end.
Streaming availability varies by country, so check your local streaming platforms.
Healer
- Year
- 2014
- Cast
- Ji Chang Wook, Park Min Young
- Episodes
- 20
- Watch on
- Netflix, iQIYI
A mysterious night courier known as Healer takes on a job involving a second-rate tabloid reporter and a famous journalist, only to uncover a decades-old mystery connecting all three of them and putting their lives in danger.
Why we recommend it
Healer blends romance, action, and mystery into a story that keeps moving. The chemistry between Jeong-hu and Yeong-sin gives the romance its heart, while the mystery surrounding their shared past keeps the tension high.
Streaming availability varies by country, so check your local streaming platforms.
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