A Killer Paradox K-Drama: Book, Trailer, Cast - Netflix Tudum

  • Deep Dive

    A Killer Paradox: Choi Woo-shik Is an Unlikely Murderer in This K-Drama

    The Korean thriller follows a murderer who brings justice with every kill — by accident.

    By Ingrid Ostby
    Dec. 12, 2024

When a hapless college student ends up murdering a stranger, he knows his days are numbered — until he finds out his victim was a serial killer. As he tries to evade suspicion, he can’t shake his new shadow: a pesky homicide detective hell-bent on finding out the truth. Starring SAG Award winner Choi Woo-shik and Baeksang Arts Awards nominees Son Suk-ku and Lee Hee-jun, the K-drama series A Killer Paradox from Lee Chang-hee (Hell Is Other People) and Kim Da-min (FAQ) follows a wayward young adult as he grapples with the morality of his unintentional murder spree.

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    Woman with wavy blonde hair in an artistic, fringed cream top stands against a dark, plain background, looking to the side; moody editorial photo with dramatic lighting. Tudum Magazine logo in the corner.

When will A Killer Paradox be released?

Stream it now.

How many episodes of A Killer Paradox are there?

The series has eight episodes.

Where can I find the trailer for A Killer Paradox?

Check it out at the top of this page. 

Who’s in the cast of A Killer Paradox?

  • Choi Woo-shik (Parasite) as Lee Tang, a university student
  • Son Suk-ku (D.P.) as Jang Nan-gam, a homicide detective
  • Lee Hee-jun (Mouse) as Song Chon, a former cop
  • Jo Seok-hyeon (The Man from Nowhere) as Kim Myeong-jin, aka Yeo Bu-il, a customer at the convenience store where Tang works
  • Jung Yi-seo (Decision to Leave) as Seon Yeo-ok, a murder witness
  • Hyun Bong-sik (Mouse) as Jang’s co-worker
Key art for ‘A Killer Paradox’ featuring Choi Woo-shik as Lee Tang
Key art for ‘A Killer Paradox’ featuring Son Suk-ku as Jang Nan-gam

What happens in A Killer Paradox?

Twentysomething Lee Tang (Choi), who was dispatched from the army six months ago, is down on his luck and has no real goals in life. He dreams of visiting Canada one day, but the trip seems far out of reach — he works at a convenience store where he earns next to nothing and is still heavily reliant on his parents for support. 

Unfortunately, things are about to get much, much worse for Tang. On his way home from work one night, he’s assaulted by one of his customers. For Tang, who dealt with years of bullying in high school, it’s the last straw. He fights back — hard — and ends up killing the guy. There are no witnesses, or so he thinks, but Tang is wracked with guilt. He’s sure he’ll be found out, and prepares to turn himself in… until he finds out his victim was a serial killer. 

It looks like Tang may get off completely scot-free, but unfortunately for him, dutiful Detective Jang Nan-gam (Son) won’t get off his back. It’s impossible to tell if Jang’s onto him or not, but then… Tang kills again. And again. And again. With his newfound hidden talent of accidentally offing evildoers, is Tang serving justice — or evading it? 

Is A Killer Paradox based on a book?

It’s based on the webtoon of the same name by Kkomabi. 

Choi Woo-shik as Lee Tang stands on a street at night in a still image from the series ‘A Killer Paradox’

Choi Woo-shik as Lee Tang in A Killer Paradox

Song Kyoung Sub/Netflix

Where does A Killer Paradox take place?

A Killer Paradox takes place in Daejeon, South Korea.

Where was A Killer Paradox filmed?

The series was filmed in Daejeon, South Korea. 

Son Suk-ku as Jang Nan-gam investigates at a crime scene in a still image from the series ‘A Killer Paradox.’

Son Suk-ku as Jang Nan-gam in A Killer Paradox

Song Kyoung Sub/Netflix

Will there be a Season 2 of A Killer Paradox?

There’s no word yet on if and when a second season will drop. 

Where can I find out more about A Killer Paradox? 

Check out this interview with the show’s stars and director to learn more about the cast, characters, and making of A Killer Paradox.

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