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Poster for Sister

Sister

2026 · 87 min

A tight, uneasy hostage thriller that keeps you leaning forward as loyalties shift between captor and captive.

Directed by
Jin Sung-moon
Genres
Crime, Thriller
Starring
Jung Zi-so, Lee Soo-hyuk, Cha Joo-young
Tagline
I've kidnapped my sister today.
Overview
Desperate to raise money for her younger sister's surgery, Hae-ran teams up with Tae-soo to kidnap her half-sister So-jin. So-jin wakes up confined in an unfamiliar place. Hae-ran and Tae-soo demand a hefty ransom, expecting her wealthy father to cough up the money. Upon discovering that one of her captors is her half-sister, So-jin enters a precarious alliance that blurs the lines between victim and perpetrator as she plots a counterattack against the ruthless Tae-soo.

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In the UKNo streaming, rental or purchase options known.
Directed by
Jin Sung-moon
Genres
Crime, Thriller
Starring
Jung Zi-so, Lee Soo-hyuk, Cha Joo-young
In your watch list

How it feels

Written by AI. It can be wrong.

Tone
  • tensestrength 3 of 3
  • darkstrength 2 of 3
  • bleakstrength 2 of 3
  • melancholicstrength 1 of 3
Pacing
brisk, 3 of 4, from slow-burn to relentless
Attention
engaged, 3 of 4, from background-friendly to demanding
Themes
  • betrayal
  • family
  • survival
  • greed
  • guilt
Places
  • single country house
  • big city
Era
contemporary
Audience
adult
Form
  • single location
  • twist ending
Content intensity
  • Gore mild
  • Language mild
  • Violence strong
  • Sex none
All scales, 0 to 10
Scales, 0 to 10
ScaleValue0 to 10
Action6
Horror2
Humour1
Realism7
Romance1
Tension8
Darkness7
Complexity6
Emotional weight7

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Where to watch in the UK

No UK streaming, rental or purchase options are known.

Streaming data from JustWatch.TMDB

Details

Genres
crime, thriller
Directed by
Jin Sung-moon
Written by
Jin Sung-moon
Starring
Jung Zi-so, Lee Soo-hyuk, Cha Joo-young, Jung Ji-woo
Music
Chae Min-ju
Cinematography
Byun Bong-sun
Runtime
87 min
Country
South Korea
Languages
Korean

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