
Forgotten(2017)
When his abducted brother returns, seemingly a different man with no memory of the past 19 days, Jin-seok chases after the truth behind the mysterious kidnapping.


“Rather be killed than forgive.”
Forensic pathologist Kang is assigned to examine the dismembered corpse of a female murder victim. Detective Min points to a fanatic environmentalist, Lee Sung-ho, as the primary suspect. But when Kang’s daughter is kidnapped, a manipulative game begins between Kang and Lee, who holds secrets about the homicide case.

Sul Kyung-gu
Kang Min-ho

Ryoo Seung-bum
Lee Sung-ho

Han Hye-jin
Min Seo-young

Sung Ji-ru
Yun Jong-kang

Park Sang-wook
Park Pyung-sik

Kim Jung-hak
Prosecutor Park

Lee Jeong-heon
Analyst

Ju Seok-tae
Seo-young's Senior

Nam Kyung-eup
Chief Detective Oh

Jo Soo-jung
Oh Eun-ah
No Mercy is a crime, thriller, mystery film released in 2010 exploring themes of detective, gore, revenge, dead body, murderer, sexual assault. Directed by Kim Hyoung-jun, it stars Sul Kyung-gu, Ryoo Seung-bum, Han Hye-jin. Forensic pathologist Kang is assigned to examine the dismembered corpse of a female murder victim. Detective Min points to a fanatic environmentalist, Lee Sung-ho, as the primary suspect. But when Kang’s daughter is kidnapped, a manipulative game begins between Kang and Lee, who holds secrets about the homicide case.
Discover titles like No Mercy — ranked by similarity and community votes
We found 15 movies similar to No Mercy
If you enjoyed No Mercy, you'll love these handpicked recommendations. Each title below shares similar themes, tone, and storytelling style. Our algorithm analyzes genres, keywords, director filmography, and cast connections to find the closest matches. Whether you're looking for the same emotional depth, narrative structure, or visual style, these picks are curated to deliver the best viewing experience for fans of No Mercy.

When his abducted brother returns, seemingly a different man with no memory of the past 19 days, Jin-seok chases after the truth behind the mysterious kidnapping.

Two veteran New York City detectives work to identify the possible connection between a recent murder and a case they believe they solved years ago; is there a serial killer on the loose, and did they perhaps put the wrong person behind bars?

Two rival detectives with different methods try to solve the murder of a missing girl after discovering her mutilated body in the tidelands of Incheon.

A girl who lost her father to a serial killer, a detective and a killer are intertwined in a chaotic relationship and are met with an unprecedented series of events.

A hardened New Orleans cop, Dave Robicheaux, finally tosses in the badge and settles into life on the bayou with his wife. But a bizarre plane crash draws him back into the fray when his family is viciously threatened.

A cop's desire for love gets in the way of his job and his professional life. Secret love affairs begin to dangerously collide as he gets assigned to a new homicide case.

Over the course of a decade, editors of the San Francisco Chronicle entice themselves in the murders of the Zodiac Killer. However, as time runs its course, interest in the case dwindles in the eyes of the professionals. The Killer stops interacting with the public. However, believing he has the answers, an amateur cartoonist from the initial sightings races against time to prevent what he believes is another murder.

Keller Dover is facing every parent’s worst nightmare. His six-year-old daughter, Anna, is missing, together with her young friend, Joy, and as minutes turn to hours, panic sets in. The only lead is a dilapidated RV that had earlier been parked on their street.

McCall believes he has put his mysterious past behind him and dedicated himself to beginning a new, quiet life. But when he meets Teri, a young girl under the control of ultra-violent Russian gangsters, he can’t stand idly by – he has to help her. Armed with hidden skills that allow him to serve vengeance against anyone who would brutalize the helpless, McCall comes out of his self-imposed retirement and finds his desire for justice reawakened. If someone has a problem, if the odds are stacked against them, if they have nowhere else to turn, McCall will help. He is The Equalizer.

When an exclusive clique of teenage socialites accidentally murder their best friend on the morning of her birthday, the three girls responsible conspire to hide the truth.

Two homicide detectives are on a desperate hunt for a serial killer whose crimes are based on the "seven deadly sins" in this dark and haunting film that takes viewers from the tortured remains of one victim to the next. The seasoned Det. Somerset researches each sin in an effort to get inside the killer's mind, while his novice partner, Mills, scoffs at his efforts to unravel the case.

Tenacious homicide detective Cassie Mayweather and her still-green partner are working a murder case, attempting to profile two malevolently brilliant young men: cold, calculating killers whose dark secrets might explain their crimes.

When Cassie's father finds himself vulnerable and bedridden, she believes she has the perfect revenge for her mother's death.

A sadistic serial rapist and murderer of young women terrorizes a small province in 1980s South Korea. To prevent further crimes, three increasingly desperate detectives with conflicting methods race against time to unravel the violent mind of the killer in a futile effort to solve the case.