The film's central antagonist, the serial killer "K," is widely believed to be inspired by , one of South Korea's most notorious serial killers.
The portrayal of the South Korean police force and the (organized crime) is rooted in historical reality. In the late 90s and early 2000s, the lines between the law and the underworld were often blurred. is the gangster the cop the devil based on true story
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 The film's central antagonist, the serial killer "K,"