A secret agent exacts revenge on a serial killer through a series of captures and releases.


Jee-woon Kim (as Kim Jee-woon)


Park Hoon-jung (screenplay), Jee-woon Kim (adaptation)
1,698 ( 90)
17 wins & 19 nominations. See more awards »





Cast overview, first billed only:
Lee Byung-Hun ... Kim Soo-hyeon
Choi Min-sik ... Jang Kyung-chul
Jeon Gook-Hwan ... Squad Chief Jang
Ho-jin Chun ... Section Chief Oh
San-ha Oh San-ha Oh ... Joo-yeon
Yoon-seo Kim Yoon-seo Kim ... Se-yeon
Moo-Seong Choi Moo-Seong Choi ... Tae-joo
In-seo Kim ... Se-jung
Kim Kap-su ... Planning team deputy head
Joon-hyuk Lee ... Agent (as Lee Joon-Hyeok)
Deok-jae Jo Deok-jae Jo ... Detective Kang
Cheol-woo Han Cheol-woo Han ... Detective Park
Myeong-Yeon Jo Myeong-Yeon Jo ... Detective Jo
Tae-goo Eom Tae-goo Eom ... Detective Eom
Se-joo Han Se-joo Han ... Woman on bus


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. Written by jck movies

Plot Summary | Plot Synopsis


Evil lives inside. See more »


Not Rated | See all certifications »

Parents Guide:

View content advisory »

Did You Know?


The Korea Media Rating Board forced Kim to recut the film for its theatrical release, objecting to its violent content. Otherwise, the film would have gotten a "Restricted" rating, preventing any sort of release in theaters or on home video. See more »


Kyung-chul: Should keep in close range while tracking me!
See more »

Crazy Credits

The title card unfolds with a scene in the background. See more »

Alternate Versions

In the end, the background music played is different in both the Korean and International versions. While in the Korean cut, the BGM that plays is emphasized and said to be forming the film's definite ending. In the International cut, the BGM is less emphasized and instead, the hero's crying voice is heard, ending the film with focus on the character. See more »


Featured in Chris Stuckmann Movie Reviews: I Saw the Devil (2020) See more »


From "Carmen" by Georges Bizet
See more »

User Reviews

The Personification of Evil
23 September 2016 | by claudio_carvalhoSee all my reviews

When Joo-yeon (San-ha Oh) has a flat tire on the snow, she calls the tow truck to help her and calls her beloved fiancé Kim Soo-hyeon (Byung-hun Lee), who is a secret agent, to kill time. Out of the blue, a man offers to help her and Joo-yeon refuses. But the man breaks her car, abducts her and dismember her body. Her father, who is a retired chief of police, gives the data of the four prime suspects to Soo- hyeon and he asks two week off to his chief. He hunts the men down and when he finds that Kyung-chul (Min-sik Choi) is the killer, he promises a dreadful to revenge against the killer to make him suffer as Joo- yeon did. Soo-hyeon becomes a monster and begins a cat-and- mouse game, capturing and releasing Kyung-chul wounded many times. But the serial-killer is the personification of evil and makes Soo-hyeon regret for not killing him when he had the chance.

"Ang-ma-reul bo-at-da", a.k.a. "I Saw the Devil", is a brutal South- Korean thriller with a story of revenge. The plot follows the creepy line of "Seven" and "Silence of the Lambs", but Kyung-chul makes John Doe and Dr. Hannibal Lecter seem to be in the kindergarten of crime. The viewer does not feel the 2h 21min running time of the suspenseful and haunting story. The direction, performances, cinematography, camera work, locations, resuming, everything is top-notch in this film. Fortunately there is no American remake of this film. My vote is eight.

Title (Brazil): "Eu Vi o Diabo" ("I Saw the Devil")

19 of 26 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 353 user reviews »

Frequently Asked Questions

This FAQ is empty. Add the first question.


Official Sites:

Official Facebook


South Korea



Release Date:

12 August 2010 (South Korea) See more »

Also Known As:

I Saw the Devil See more »

Filming Locations:

South Korea


Box Office

Opening Weekend USA:

$13,567, 6 March 2011

Gross USA:


Cumulative Worldwide Gross:

See more on IMDbPro »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.85 : 1
See full technical specs »

Contribute to This Page

Recently Viewed