The Cop, The Devil — The Gangster,

The investigation leads them through the gritty neon streets of Cheonan. The gangster’s henchmen and the cop’s unit play a dangerous game of cat-and-mouse with K.

At the trial, K almost walks free due to a lack of physical evidence. In a final masterstroke, Dong-soo turns himself in to the police. Since he is the only survivor of K's attacks, his testimony is the "smoking gun." The Gangster, The Cop, The Devil

Dong-soo provides the manpower and underworld intel. Intel: Tae-suk provides police data and forensic tools. The investigation leads them through the gritty neon

Jung Tae-suk is a hot-headed detective convinced that a string of recent "accidental" murders are the work of a single serial killer. His superiors ignore him, but he realizes Dong-soo is the only living witness to the murderer. The two men strike a deal: In a final masterstroke, Dong-soo turns himself in

They find K’s weapon—a specific type of knife—and track his stolen vehicle.

As they close in, K realizes he is being hunted by both sides and begins to enjoy the challenge, intentionally leaving clues to bait his pursuers. The Climax

on the upcoming American remake (produced by Sylvester Stallone)