The Devil You Know poster

The Devil You Know

5.5(2)20251h 44m1

Yu-jeong is a star English tutor, popular nationwide for her lessons and beauty. She has the perfect life going on- her education business is blooming, she has a successful doctor husband and a loving daughter. One day, she meets Sun-hee from a volunteer group. He seems like a friendly guy with charms. Gang-su, Yu-Jeong's childhood friend who is like a little brother to her, however warns her about Sun-hee that he has a bad reputation even among gangsters. But what Yu-jeong doesn't realize is that Sun-hee is a narcissistic sociopath- until it's too late. Meanwhile, Sun-hee's gang brothers steal money behind his back, and Sun-hee's old time friend approaches him to start a new drug business. Yu-jeong fights tooth and nails to break free from Sun-hee and enlists Gang-su's help- and everything turns deadly when it all reaches a boiling point.

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  • TMDB

    5.5/10

    2 votes

Status
Released
Budget
—
Box office
—
Language
Korean

Top billed cast

Behind the camera

Produced in

South Korea

Where to watch

Availability for South Korea. Provided by JustWatch through the TMDB API.

Stream

  • TVING logoTVING

Gallery

Still from The Devil You KnowStill from The Devil You Know

Videos

No extra videos are listed for this title yet.

Release dates

  • South KoreaKR

    • Theatrical152025-MF0130520 Jun 2025

Frequently asked questions

The Devil You Know was released on 20 June 2025.

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