I Saw the Devil (2010)
A secret agent hunts a serial killer with relentless vengeance, becoming a monster in a bleak, gritty pursuit.
Kyung-chul is a dangerous psychopath who kills for pleasure. Soo-hyeon, a top-secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take vengeance against the killer, even if it means that he must become a monster himself.
How intense is I Saw the Devil?
I Saw the Devil is properly scary, with extreme gore and brutal violence. Emotionally it is devastating. The pace is relentless, and it is a full-attention watch. Rated R.
What I Saw the Devil feels like
- Tone
- grittysuspensefulbleakpulpy
- Pace
- Relentless
- Best for
- Full attention
Where to stream I Saw the Devil
Not on a US subscription service at our last check. Rent or buy may still be an option.
US availability via TMDB, last checked Sep 14, 2026. The app filters picks to the services you actually have.
Is I Saw the Devil for you?
Is I Saw the Devil scary?
Yes, properly. I Saw the Devil is scare level 2 of 3, the real thing without being an endurance test.
Is I Saw the Devil gory or violent?
Extreme gore (3 of 3) and brutal violence (3 of 3). If graphic gore is a dealbreaker, skip it.
Is I Saw the Devil sad or heavy?
Yes. Emotional weight 3 of 3. It hits hard; do not plan anything light after.
Is I Saw the Devil OK for kids?
It is rated R, so it is made for adults. Intensity: scare 2, gore 3, violence 3, each out of 3.
How long is I Saw the Devil?
I Saw the Devil runs 2h 24m.
Where can I stream I Saw the Devil?
I Saw the Devil is not on a US subscription service right now (rent or buy may still be an option).
Does I Saw the Devil have a happy ending? spoiler-safe answer
Bittersweet. It earns its ending, but not everyone gets what they want.
Cast and crew
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