340 user 289 critic

I Saw the Devil (2010)

Ang-ma-reul bo-at-da (original title)
Not Rated | | Action, Crime, Drama | 12 August 2010 (South Korea)
2:15 | Trailer
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)
1,750 ( 124)
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


To Catch A Monster He Must Become One 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 »


Joo-yeon: Can you please not kill me?
See more »

Crazy Credits

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

Alternate Versions

The German ratings board FSK denied the uncut film its highest rating "Not under 18". Approximately 11 minutes were cut from the film to achieve this rating after all. For the release of the uncut version, the film was approved by an independent legal committee (because the legal committee of SPIO denied an approval). See more »


Featured in WatchMojo: Top 10 Horror Movies: 2010s (2015) See more »


From "Carmen" by Georges Bizet
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User Reviews

A bit violent but fun
10 July 2018 | by perica-43151See all my reviews

This movie is one more proof of the power of Korean cinema. It is violent, but also has twists and nice ending, and is fun and memorable and original. It also shows the price of revenge, but also various kinds of depravity. It is well worth a watch, if taken with a grain of salt and if you don't mind a bit of a human pulp here and there served on screen for good measure of East Asian culture.

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Official Sites:

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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

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.85 : 1
See full technical specs »

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