The "Devil" in the movie—the cold, calculated serial killer played by Kim Sung-kyu—wasn't pulled out of thin air. Director Lee Won-tae has stated in interviews that the character was inspired by several real-life Korean serial killers, most notably .
It’s a masterclass in taking the vibe of true crime and turning it into a high-octane thriller. Are you a fan of South Korean thrillers, or is the gangster the cop the devil based on true story
But if you’ve ever wondered, , the answer is a fascinating mix of "yes" and "no." While the specific alliance depicted in the film is largely a product of cinematic imagination, the movie is heavily inspired by real-life serial murder cases that gripped South Korea in the early 2000s. The Real Inspiration: The Chul-hong Case The "Devil" in the movie—the cold, calculated serial