"A Killer Paradox" is a thriller series that premiered on Netflix in 2024. The story follows an ordinary young man who, after one accidental killing leads to another, finds himself stuck in an endless cat-and-mouse chase with a shrewd detective.
The protagonist, Lee Tang, is an ordinary college student who gets into an argument with a customer during a part-time job at a convenience store at night, unconsciously swings a hammer, and kills him. Suffering from guilt and fear of murder, Lee Tang learns one day that the person he killed was a serial killer and slowly realizes that he has a supernatural ability to identify "bad seeds". He soon becomes a dark hero who punishes people who committed unethical evils in the past.
The series stars Choi Woo-shik as Lee Tang, Son Suk-ku as Jang Nan Gam, and Lee Hee-jun as Song Chon. It is based on the Naver webtoon of the same name by Kkomabi.