Is The Gangster The Cop The Devil Based On True Story

Organised crime bosses in South Korea have historically crossed paths with violent criminals, but the film heavily romanticizes the scale of the gangster-led manhunt. While informants from the criminal underworld frequently provided tips to real detectives during the 2000s, an organized mob boss launching a full-scale parallel investigation to capture a serial killer is a dramatic exaggeration designed for high-stakes action. 2. The Cop: Jung Tae-suk

Ma Dong-seok’s character—a charismatic, fist-fighting crime boss who survives a stabbing—is a fictional archetype. The brilliance of the film is taking the real fear of a serial killer and asking: What if the one person ruthless enough to catch a monster was another monster?

In reality, the film's "Devil" (Kang Kyung-ho) is a composite character designed for cinematic impact.

While Yoo Young-chul provides the template for a single, psychopathic killer, the specific time and location of the film are directly linked to another real-life case: the 2005 Cheonan serial murders (천안 연쇄살인 사건). is the gangster the cop the devil based on true story

He intentionally rear-ended his victims' cars to force them to step outside.

To create a high-stakes cinematic experience, the movie takes several creative liberties:

While the backdrop of a terrifying serial killer is entirely real, the film introduces significant creative liberties to make the plot more gripping. Here is how the movie's central pillars compare to reality. 1. The Devil (The Killer) Organised crime bosses in South Korea have historically

Give you a breakdown of the movie's ending (spoiler alert!).

While the protagonists are fictional, the antagonist, known only as "K," represents a specific type of criminal often seen in real life: the serial killer who targets the marginalized.

Targeted wealthy homes and massage workers using blunt objects. A formal, secret agreement between a mob boss and a cop. While Yoo Young-chul provides the template for a

The film’s primary inspiration is the prolific serial killer , who terrorized Seoul and surrounding areas in 2003-2004. Known as the “Raincoat Killer” (for wearing a raincoat to avoid blood splatter), Yoo confessed to murdering at least 20 people—mostly wealthy elderly individuals and female masseuses.

In the film, the mob boss (played by Ma Dong-seok) survives a random stabbing and uses his gang's manpower for a revenge manhunt. In real life, most victims of serial killers like Yoo Young-chul did not have a private army to fight back.