: The film is set in the summer of 2005. This aligns with the era when South Korea was grappling with several high-profile serial murder cases, including those of Yoo Young-chul and Jeong Nam-gyu (the "Rainy Thursday Killer").
While the specific alliance between a mobster and a cop is a dramatized "what if" scenario, the director, Lee Won-tae, has stated that the film is from various criminal cases in South Korea. 1. The "Devil" and Real-Life Serial Killers is the gangster the cop the devil based on true story
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 . : The film is set in the summer of 2005
The twist? The killer is a random, chaotic serial killer with no motive other than the thrill of murder. He is not a rival gangster or a hitman; he is a ghost who kills indiscriminately. The twist