Director: Kim Jin-hwang
Cast: Ha Jung-woo, Kim Nam-gil, Yoo Da-in, Jeong Man-sik, Im Sung-jae
Nocturnal is a 2025 South Korean crime thriller directed by Kim Jin-hwang, starring Ha Jung-woo and Kim Nam-gil. Running 99 minutes, it weaves a dense mystery around a detective whose investigation into a suspicious death begins mirroring the pages of a best-selling novel — a puzzle where fiction and reality blur in unsettling ways.
What is Nocturnal about?
When a prominent crime novelist's husband is found dead under ambiguous circumstances, veteran detective Ha Jung-woo is assigned to what looks like a straightforward case. But as he sifts through the evidence and speaks with the widow, he notices an eerie pattern: every twist his inquiry takes appears to have already been written down. The case seems lifted straight from the author's own unpublished manuscript. Uncertain whether he is uncovering a real crime or being manipulated inside someone else's story, the detective must race to separate truth from fiction before the plot reaches its written conclusion. The film keeps its cards close, building tension through mounting coincidences and a cast of suspects each with something to hide.
Cast & crew
Ha Jung-woo, one of South Korean cinema's most dependable lead actors, anchors the film as the increasingly rattled detective. Kim Nam-gil plays a key figure whose connection to the case proves more layered than it first appears. The supporting ensemble — Yoo Da-in, Jeong Man-sik, Im Sung-jae, and Heo Sung-tae — rounds out a gallery of characters each carrying their own secrets.
Context & significance
Korean crime thrillers have earned a devoted following among Persian-speaking diaspora viewers over the past decade, thanks to tightly plotted screenplays, cinematic production values, and morally complex protagonists that translate across cultures. Nocturnal fits squarely into this tradition — a genre exercise that trusts its audience to keep up with layered deception. For viewers who enjoyed titles like Memories of Murder or The Wailing, this 2025 entry offers a similar pleasure: the slow dread of watching a professional unravel as the line between investigator and character dissolves. The film is available on K-Time with a full Persian dub, making it accessible for all family members regardless of language comfort.
Where & how to watch
Nocturnal is available on K-Time with a Persian dub — no subtitles required. Stream it on the web, on your TV دستگاه, or on your phone. No VPN is needed and there is no geo-blocking for diaspora viewers. Subscribe and cancel anytime.