Second Sister
2025, Korean. Directed by Shin Jai-ho.
Find the murderer hiding in the network
High school student 'Ji-eun' was the victim of the crime, but distorted online posts and malicious comments made her into the perpetrator in the public eye, driving her to take her own life. Her sister 'So-eun' finds detective 'Jun-kyung' to uncover the truth behind her sister's unfair death, and he begins hunting down a suspect in cyberspace. As clues are revealed one by one, the case grows from a simple rumor into a complex web of truth involving anonymous accounts.
- Runtime
- 1h 30m
- Post-credits
- None listed
- Language
- Korean
- Rated
- Check local
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Where to watch Second Sister
Second Sister isn’t streaming on any OTT platform in India yet; it released on 17 December 2025.
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Details
- Released
- 17 December 2025
- Original title
- 망내인: 얼굴 없는 살인자들
- Country
- South Korea
- Written by
- Shin Jai-ho
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News & fan talk
What Second Sister is based on
Second Sister is adapted from a novel.
Source details from Wikidata and TMDB.
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Second Sister: quick answers
Is Second Sister worth watching?
Second Sister doesn’t have enough ratings for a verdict yet.
How long is Second Sister?
Second Sister runs 90 minutes (1h 30m).
Does Second Sister have a post-credits scene?
None is listed for Second Sister. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Second Sister parents guide: is it suitable for kids?
No age rating is listed for Second Sister yet.
Which OTT platform is Second Sister on?
Second Sister isn’t streaming on any OTT platform in India yet; it released on 17 December 2025. (Checked 9 November 2026.)
What movies are like Second Sister?
If you liked Second Sister, try Door Lock, The Chase, The Seven-Ups.
Who directed Second Sister?
Second Sister (2025) was directed by Shin Jai-ho and stars Kim Min-gue, Kang Seo-ha, Seong Hee-hyeon.
What is Second Sister based on?
Second Sister is adapted from a novel.