I Saw the Devil
Plot
SPOILER: Jang Kyung-chul (Choi Min-sik) is a dangerous psychopath serial killer. He has committed infernal serial murders in diabolic ways that one cannot even imagine and his victims range from young women to even children. The police have chased him for a long time, but were unable to catch him. One day, Joo-yeon, daughter of a retired police chief becomes his prey and is found dead in a horrific state. Her fiancé Soo-hyun (Lee Byung-hun), a top secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take bloody vengeance against the killer, even if it means that he must become a monster himself to get this monstrous and inhumane killer.
Overall Series Review
Categorical Breakdown
The film is a South Korean production featuring an entirely Korean cast, set within a local context. The conflict is purely based on individual psychological and moral choices, not on race, class, or any intersectional hierarchy. Character merit, or the lack thereof (evil versus corrupted justice), is the sole determinant of the narrative drive, aligning with a universal meritocratic theme.
The central conflict is a personal vigilante quest, not a broad indictment of South Korean civilization or heritage. The family of the victim, including her sister and father, are portrayed as having a contained, righteous grief and are shown to possess a moral grounding, partly through their evident faith, which contrasts with the protagonist's chaotic rage. The film does not feature any 'Noble Savage' or demonization of the home culture; the antagonist is simply an extreme psychopath.
The movie is a male-driven revenge tragedy. The female characters are primarily victims of the antagonist's brutal violence, which is a common trope in this genre. There are no 'Girl Boss' figures or 'Mary Sue' leads present. The plot is motivated by the death of the protagonist's pregnant fiancée, and motherhood is implicitly framed as a loss that precipitates the ensuing chaos, which is the opposite of an anti-natalist message.
The narrative strictly adheres to a normative structure, centering on the traditional male-female pairing of the fiancée and agent whose life is shattered. The film contains no presence of alternative sexualities or gender ideology. All themes related to sexuality are private and revolve around the killer's violent heterosexual assaults, with no attempt to lecture on or deconstruct the nuclear family.
The film’s title and themes deal explicitly with evil as a tangible force. The side characters (the fiancée's father and sister) are shown to be devout Christians, with their controlled reaction to grief serving as a moral anchor and representing a belief in a transcendent moral order that the protagonist rejects through his nihilistic revenge path. There is no depiction of traditional religion as a source of evil or Christian characters as bigots.