On True Story — Is The Gangster The Cop The Devil Based

In reality, Kim Tae-chon just beat the guy and let him go. That makes for a funny anecdote, but not a two-hour thriller.

The core, unbelievable premise— A serial killer accidentally attacks a mob boss, and the mob boss hunts him down —is 100% factual. The screenwriters took that extraordinary seed of reality and grew a fictional forest around it. Sadly, the real-life gangster, Kim Tae-chon, did not have a heroic arc. He was a violent criminal who, despite inadvertently helping the police by identifying a serial killer, remained a career gangster. He passed away in 2016. is the gangster the cop the devil based on true story

Furthermore, the "mob boss" Kim Tae-chon never entered into a formal alliance with the police. Kim was arrested shortly thereafter for his own crimes (including violence, blackmail, and running gambling dens). He only told the story about beating up the serial killer to the press after he was in prison, likely to boost his reputation. In reality, Kim Tae-chon just beat the guy and let him go

So, the next time you watch Don Lee’s massive fist smash through a car window to grab a serial killer, remember: That insane scenario is fiction. But the reason the serial killer was bleeding in the first place? That part is real. The screenwriters took that extraordinary seed of reality

Here is the detailed breakdown of the true story that inspired the film, and where Hollywood-style fiction takes over. To understand the film’s roots, you have to look at a real person: Yoo Young-chul . He is one of South Korea’s most notorious serial killers, active between September 2003 and July 2004. Known as the "Raincoat Killer" (due to demanding his victims wear a raincoat during the murders) or the "Happy Day" killer (after a message he carved on a victim), Yoo Young-chul confessed to murdering 20 people—mostly wealthy elderly people and female masseuses.