The Devil You Know Poster

The Devil You Know 2025

★ 5.52 votes104 min📅 2025-06-20

In *The Devil You Know (2025)*, Hyun Woo-sung crafts a gripping psychological thriller that peels back the polished veneer of success to reveal a world of hidden dangers.

Director: Hyun Woo-sung

Cast

Han Chae-young
Han Chae-young
Yu-jeong
Hyun Woo-sung
Hyun Woo-sung
Sun-hee
Jang Eui-soo
Jang Eui-soo
Gang-su

Frequently Asked Questions

What is The Devil You Know (2025) about?

This thriller follows Yu-jeong, a celebrated English tutor with an idyllic family life, as her encounter with a charming stranger named Sun-hee threatens to destroy everything. As warnings from her childhood friend go unheeded, she's drawn into a web of deception that challenges her perception of safety and trust.

Who directed The Devil You Know?

Hyun Woo-sung, known for his sharp eye for suspense, directs *The Devil You Know*.

Who stars in The Devil You Know?

The film stars Han Chae-young as Yu-jeong, Hyun Woo-sung as Gang-su, and Jang Eui-soo as Sun-hee.

Is The Devil You Know (2025) worth watching?

As an unrated thriller blending crime and psychological suspense, *The Devil You Know* delivers high-stakes tension and intrigue. Its themes of trust and hidden danger make it a compelling watch for fans of the genre, even without an IMDb rating.

How long is The Devil You Know?

The Devil You Know has a runtime of 104 minutes.

About The Devil You Know (2025) — A tutor's life unravels in this Korean psychological thriller

In *The Devil You Know (2025)*, Hyun Woo-sung crafts a gripping psychological thriller that peels back the polished veneer of success to reveal a world of hidden dangers. Yu-jeong, a radiant English tutor with nationwide fame and a picture-perfect life as a doctor's wife and doting mother, appears untouchable—until she encounters Sun-hee, a seemingly charming volunteer with a sinister reputation. Even her closest confidant, Gang-su, senses the danger lurking beneath Sun-hee's affable demeanor. As Yu-jeong's life spirals into uncertainty, the film explores themes of trust, deception, and the fragility of the 'perfect' life.

The atmosphere crackles with tension as Yu-jeong's reality unravels, blending crime and thriller elements into a suspenseful narrative. With Hyun Woo-sung at the helm and a stellar cast led by Han Chae-young and Jang Eui-soo, *The Devil You Know* promises a thrilling ride that questions how well we truly know the people around us.