Often cited as a classic of the genre, this film is a dark, twisty game of cat-and-mouse between a law enforcement professional and a killer. No Mercy (2010) - IMDb
Similar to other Korean noir films like Memories of Murder or The Chaser , this film portrays the legal and investigative systems as flawed or impotent. Justice is not served through courts or police work, but through primal, often savage, individual actions. korean movie no mercy