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 thriller series A Killer Paradox from Lee Chang-hee (Hell Is Other People, The Vanished) and Kim Da-min (FAQ) follows a wayward young adult as he grapples with the morality of his unintentional murder spree.

When will A Killer Paradox be released?

Stream it now.

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

Choi Woo-shik as Lee Tang in A Killer Paradox

Song Kyoung Sub/Netflix

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. 

Son Suk-ku as Jang Nan-gam 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. 

Will there be a Season 2 of A Killer Paradox?

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

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Where can I find out more about A Killer Paradox? 

Watch the below featurette — with actors Lee, Choi, and Son — to get an in-depth look at the cast, characters, and making of A Killer Paradox.