No Mercy poster

No Mercy

"Rather be killed than forgive."

Movie 2010 2h 5m 7.4 /10
Directed by Kim Hyoung-jun

An intense Korean crime thriller centers on a forensic pathologist drawn into a case that veers into danger and personal cost. Dr. Kang Min-ho is called to a brutal dismemberment, the victim a young woman. Detective Min targets a vocal environmentalist, Lee Sung-ho, as the main suspect. Yet the... Read more

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Streaming availability last verified: January 20, 2026

About No Mercy

An intense Korean crime thriller centers on a forensic pathologist drawn into a case that veers into danger and personal cost. Dr. Kang Min-ho is called to a brutal dismemberment, the victim a young woman. Detective Min targets a vocal environmentalist, Lee Sung-ho, as the main suspect. Yet the investigation spirals when Kang's daughter is abducted, turning the pursuit into a high-stakes game of wits. As secrets about the homicide surface, Kang finds himself negotiating with a foe who knows more than he lets on. Trust frays, motives sharpen, and every new lead deepens the trap between professional obligation and a father's desperate need to save his child. The tension escalates as timelines collide.

Directed by Kim Hyoung-jun, No Mercy arrived in 2010 with a screenplay credited to Lee Jung-ho. The film sits squarely in the tense crime thriller mold prized in Korean cinema for its procedural detail and psychological twists for Western audiences as well.

Box office data for No Mercy is not widely reported, reflecting its modest release and niche audience. There isn’t a readily available worldwide gross to cite from public records. Outside Asia distribution was limited.

Critics note the film leans on an atmosphere of obsession and moral ambiguity. It probes the ethics of forensic work while hinting at how fear can drive a father to cross lines, intensifying the cat and mouse dynamic between Kang and Lee. The screenplay avoids easy answers, preferring to pose questions about guilt, complicity, and the cost of truth.

Cultural impact remains modest with No Mercy. It has not spawned famous quotes or widely referenced scenes in mainstream pop culture, and its influence is largely limited to fans of genre thrillers who appreciate its forensic minded plotting. For viewers who enjoy procedural intensity and moral gray zones, No Mercy offers a compact thriller that lingers after the final cut.

Details

Release Date
January 07, 2010
Runtime
2h 5m
User Ratings
201 votes
Type
Movie
Genres
Crime, Thriller, Mystery
Country
South Korea
Studio
Cinema Service +2 more
External Links
View on IMDB

Official Trailer

Cast

Sul Kyung-gu

Sul Kyung-gu

Kang Min-ho

Ryoo Seung-bum

Ryoo Seung-bum

Lee Sung-ho

Han Hye-jin

Han Hye-jin

Min Seo-young

Sung Ji-ru

Sung Ji-ru

Yun Jong-kang

Park Sang-wook

Park Sang-wook

Park Pyung-sik

Kim Jung-hak

Kim Jung-hak

Prosecutor Park

Lee Jeong-heon

Lee Jeong-heon

Analyst

Ju Seok-tae

Ju Seok-tae

Seo-young's Senior

Nam Kyung-eup

Nam Kyung-eup

Chief Detective Oh

Jo Soo-jung

Jo Soo-jung

Oh Eun-ah

Director: Kim Hyoung-jun

Written by: Lee Jung-ho

Frequently Asked Questions

No Mercy is not currently available to stream, rent, or buy online in the US. Check back later for updates.

With a rating of 7.4/10 from 201 viewers, No Mercy is well-regarded and recommended by viewers.

An intense Korean crime thriller centers on a forensic pathologist drawn into a case that veers into danger and personal cost. Dr. Kang Min-ho is called to a brutal dismemberment, the victim a young woman. Detective Min targets a vocal environmentalist, Lee Sung-ho, as the main suspect. Yet the i...

No Mercy stars Sul Kyung-gu, Ryoo Seung-bum, Han Hye-jin, Sung Ji-ru, and Park Sang-wook.

No Mercy was directed by Kim Hyoung-jun.

No Mercy was released on January 07, 2010.

No Mercy is a Crime, Thriller, and Mystery film.

Sul Kyung-gu portrays Kang Min-ho, the forensic pathologist at the center of the case.

Ryoo Seung-bum plays Lee Sung-ho, the fanatic environmentalist who is the main suspect.

When Kang's daughter is kidnapped, a manipulative game starts between Kang and Lee Sung-ho, who holds secrets about the homicide case.

The film follows a forensic pathologist examining a dismembered female victim while a kidnapping drags him into a dangerous cat and mouse game with the prime suspect.