Check out these amazing Investigation themed Asian films - AsianFilmFans

1986 Gyunggi Province. The body of a young woman is found brutally raped and murdered. Two months later, a series of rapes and murders commences under similar circumstances. And in a country that had never known such crimes, the dark whispers about a serial murderer grow louder. A special task force is set up in the area, with two local detectives Park Doo-Man and Jo Young-Goo joined by a detective from Seoul who requested to be assigned to the case.

Memories of Murder (2003)

Mi-ja, who has been taking care of a retired teacher, Ms Park, invites several of her former students to her house 16 years after their graduation. Since the end of her teaching career, Park has been residing in the countryside, suffering from an illness while an ex-student, the kind and pretty Mi-ja cares for her.

Bloody Reunion (2006)

A grizzled detective works to solve the murder of a 16-year-old Hunan girl.

Port of Call (2015)

Lee Chan-Woo runs a nightclub. A drug case that draws the name of a famous entertainer takes place. Lee Chan-Woo knows that the prosecution and politicians will get involved. He decides to investigate the drug case by himself. He gathers together people including Sung Eun-Young and Park Ki-Hun

Quantum Physics (2019)

Soon-ho, a lawyer from a large law firm, decides to become a snob and defend a case that has a big promotion opportunity for him to become a partner lawyer. He intentionally approaches an autistic girl, Ji-woo, to exonerate his client.

Innocent Witness (2019)

A car crash sparks a war between local police and an international terrorist organization.

Line Walker 2 (2019)

Kyung-min lives alone in a one-room apartment. One day, she found a trace of a stranger breaking into her room and soon a mysterious murder case begins to unravel

Door Lock (2018)

Ruthless cop Chul-joong and a merciless killer in raincoat run into each other in a small alleyway and form a fatal bond. A free-for-all fight occurs by coincidence on a rainy street. A week later, the dead bodies of an old couple are discovered with multiple stab wounds. Chul-joong suddenly recalls the night he met the man in the raincoat. Chul-joong meets the old couple's son CHO Gyoo-hwan. He has an intuition that CHO is the murder but has no clue. In the meantime, another murder takes place in the same fashion. The showdown between a dirty cop and a killer unfolds, as things get more personal.

Public Enemy (2002)

A drug squad attempts to take down a criminal organization and they must go undercover to do so, so they begin working at a chicken restaurant, that becomes famous for its delicious chicken. Due to the unexpected popularity, the detectives find themselves in a situation they never expected.

Extreme Job (2019)

One day, detective Incheol (Jung Chan) visits Wido. The island is high with hopes for redevelopment as it has been designated as a cultural tourism trial site. Incheol was dispatched to the island to determine the cause of Jong-gu's death who is thought to have been killed in a landslide. But from the first day of his arrival, the islanders' behavior struck Incheol as strange. They wanted him to quietly conclude the case and leave. Incheol, who would even accept dirty money to treat his wife's illness, decides to leave. That night, another case of suicide takes place and Incheol could feel that the residents' bizarre behavior and the series of accidents are not irrelevant. Now, Incheol's investigation reveals the dirty truth the islanders have been hiding.

Wi-do (2011)

Kyung-chul is a dangerous psychopath who kills for pleasure. He has committed infernal serial murders in diabolic ways that one cannot even imagine and his victims range from young women to even children. The police have chased him for a long time, but were unable to catch him. One day, Joo-yeon, daughter of a retired police chief becomes his prey and is found dead in a horrific state. Her fiance Soo-hyun, a top secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take bloody vengeance against the killer, even if it means that he must become a monster himself to get this monstrous and inhumane killer.

I Saw the Devil (2010)

Disgraced by the ill-fated drug sting, ex-cop Dae-ho lives in Busan as a unofficial sheriff and looks after the town. Meanwhile, new businessman in town Dong-jin wins townspeople's favor to start a beach resort, which becomes a huge hit. Dae-ho recalls that Dong-jin was somehow involved in the drug sting and begins an investigation, suspecting that he's also involved in a drug case that took place recently.

The Sheriff In Town (2017)