as Ho-kyung: The enigmatic and increasingly threatening upstairs neighbor. Director : Kim Jeong-uk. Runtime : Approximately 106–107 minutes. Critical Reception
(Korean: Sais-sori / 사잇소리) is a 2022 psychological thriller directed by Kim Jeong-uk. It explores themes of urban claustrophobia, obsession, and the thin line between creative inspiration and dangerous voyeurism. Core Premise & Plot Exist Within (2022) (Korean)
: As her obsession grows, Ho-kyung notices her presence. What starts as a hunt for a story descends into a tense game of cat-and-mouse that uncovers a dark reality about her neighbor. Key Cast & Production Critical Reception (Korean: Sais-sori / 사잇소리) is a
Reviewers highlight the film's "slow-burn" tension and effective use of claustrophobic framing to enhance the feeling of paranoia. However, some viewers have criticized the protagonist's lack of "survival skills" and the script's reliance on common thriller tropes. What starts as a hunt for a story
The film is available on several streaming platforms, including: Rakuten Viki (with subtitles).
The story follows , an aspiring but struggling writer living in unit #401. Desperate for a winning idea for a screenplay competition to help her family's finances, she becomes obsessed with a persistent "thudding" noise coming from the apartment above her, unit #501.