Kagi no Kakatta Heya - Asian drama recommendation
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Kagi no Kakatta Heya(鍵のかかった部屋)

2012Japan
Novel AdaptationCalm Male LeadDramaEccentric Male LeadEpisodic FormatInvestigationLocked Room MysteryMurderMysterySignature MoveSmart Male LeadSuspenseThriller

Enomoto Kei works for a prominent security company where he unravels the mysteries of locked rooms. Despite his calm and collected nature, he possesses a peculiar fascination with locks and keys. Instead of simply solving cases, his main focus is on deciphering the secrets hidden within sealed rooms. (

Asian dramas like
Kagi No Kakatta Heya

Recommendation: Mottomo Tooi Ginga SP similar to Kagi no Kakatta Heya
47%Match
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Mottomo Tooi Ginga SP(最も遠い銀河)

2013Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerDeathMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 47% similarity match.

Detective Seiichiro Watari from the Otaru Police Precinct in Hokkaido is retiring soon with unresolved business from seven years ago. The unidentified skeleton of a woman was discovered in the sea of Otaru, halting the investigation. Watari is determined to identify her before leaving the precinct. Three years after retirement, he stumbles upon a clue that could solve the case, despite his limited life expectancy. With the help of detective Kaoru Saotome, he begins reinvestigating, much to the dismay of his wife Suzuko. They travel to Tokyo to meet a jewelry designer who provided a clue, but she has mysteriously disappeared. Watari's obsession with the case stems from the tragic drowning of his daughter Kozue 20 years ago. As he delves deeper, he encounters architect Haruyuki Kiryu, whose connection to the case remains unclear. Kiryu is determined to succeed in his company, even as he becomes involved with Akane Seike, the president's daughter who bears a striking resemblance to his deceased girlfriend. Their entangled fates lead to a dangerous pursuit of ambition and truth.

Recommendation: Otto yo, Shinde Kurenai ka similar to Kagi no Kakatta Heya
47%Match
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Otto yo, Shinde Kurenai ka(夫よ、死んでくれないか)

2025Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerDeathRevenge

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 47% similarity match.

As they entered their late thirties, Komoto Maya, Kagami Riko, and Sakaki Yurika realized they regretted marrying for the sake of happiness. They started to feel the limitations of their careers and questioned the direction of their lives. These three college classmates often went out for drinks together, sharing complaints about their husbands and releasing their pent-up frustrations. One fateful evening, Maya and Riko were summoned to Yurika's home, where she shockingly confessed, "I have killed my husband!" Subsequently, Maya's husband mysteriously disappeared, setting off a chain of events that would alter the destinies of these three women. Thus begins the tale of their vengeance as they strive to reclaim the happiness stolen from them by their marriages.

Recommendation: Yi Shuang Xiu Hua Xie similar to Kagi no Kakatta Heya
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Yi Shuang Xiu Hua Xie(一双绣花鞋)

2003China
Novel AdaptationDramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 46% similarity match.

Prior to the liberation of Chongqing, Ye Da Long led a team from the PLA on secret missions in the area. Following the downfall of the national army, possessing the hidden spy list became crucial in controlling the underground network of Chongqing. Military special agent Ji Yu Tang has been feeling uneasy recently after discovering a pair of embroidered shoes in his boss Lin NanXuan's coffin during the funeral. Shen Chao took over as the head of public security after the liberation of the mountainous city of Chongqing.

Recommendation: Missing Noir M similar to Kagi no Kakatta Heya
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Missing Noir M(실종느와르 M)

2015South Korea
Calm Male LeadDramaInvestigationMurderMysterySmart Male LeadSuspenseThrillerChild Prodigy Male LeadDifficult AdulthoodInvoluntarily Missing PersonRevengeSuicide

Like Kagi no Kakatta Heya, this drama also features Calm Male Lead, Drama, Investigation, Murder, Mystery, Smart Male Lead, Suspense, and Thriller themes with a 44% similarity match.

Gil Su Hyeon possesses exceptional intelligence. At just 10 years old, he enrolled at Harvard University, and following his graduation, he began his career with the FBI. A decade later, he chose to return to South Korea, where he now leads the Special Missing Persons Unit. This unit handles approximately 1% of unique missing cases that involve violent crimes. While his appearance is nearly flawless, he harbors a secret. Detective Oh Dae Yeong has recently joined the Special Missing Persons Unit. With two decades of experience as a detective, he is known for his meticulous adherence to the law and has earned a reputation as an expert in missing person investigations. (MUBI)

Recommendation: 64 (2015) similar to Kagi no Kakatta Heya
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64 (2015)(64)

2015Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 43% similarity match.

Amidst a dispute between the public relations office of D Prefectural Police and the correspondents club regarding the anonymity of perpetrators, it has been decided that a director from the Tokyo Metropolitan Police Department will visit the family of the victim in a significant unsolved case from 1989, just a week before the statute of limitations expires. The case involves the kidnapping and murder of Shoko-chan, which remains the most heinous crime in the history of D Prefectural Police. The family of the victim has declined the director's offer to extend condolences. A strict confidentiality order has been issued for all individuals involved in the case, including the investigators from that time. This has created a barrier between the Criminal Investigations Department and the Police Affairs Department. Additionally, a mysterious memo has surfaced, followed by a new kidnapping that bears a striking resemblance to the 1989 case just before the director's scheduled visit.

Recommendation: Kami no Tsuki similar to Kagi no Kakatta Heya
43%Match
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Kami no Tsuki(紙の月)

2014Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 43% similarity match.

Rinka Umezawa, a homemaker, seeks out small joys in life. Her husband, Masabumi, is committed to supporting her. The couple does not have any children. Rinka decides to take on a part-time job at a bank, where she visits clients' homes and occasionally assists them with household tasks, earning their trust. During one visit to client Kojo Hirabayashi's home, she encounters his grandson Kota, who asks for money. This interaction has a profound impact on Rinka. Subsequently, she steals one hundred million yen from the bank and disappears. Two years later, Rinka's former classmates Yuko Okazaki and Aki Nakaji uncover her embezzlement scheme and confront their own inner demons.

Recommendation: Hello Monster similar to Kagi no Kakatta Heya
42%Match
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Hello Monster(너를 기억해)

2015South Korea
Calm Male LeadDramaEccentric Male LeadInvestigationMysterySmart Male LeadSuspenseThrillerBromanceCriminal Profiler Male LeadFemale Chases Male FirstHidden IdentityPsychologicalSlight Romance

Like Kagi no Kakatta Heya, this drama also features Calm Male Lead, Drama, Eccentric Male Lead, Investigation, Mystery, Smart Male Lead, Suspense, and Thriller themes with a 42% similarity match.

Brilliant profiler Lee Hyun returns to South Korea after a detail from a case ignites a long-buried memory. Unbeknownst to him, Detective Cha Ji An, a member of his team, has been secretly investigating his past. She knows that his father was killed and that his brother vanished under suspicious circumstances linked to a criminal named Lee Joon Young—whom they are both determined to locate and bring to justice. Each is trying to uncover the truth about the other, unaware that they are entangled in a perilous game orchestrated by a master manipulator, and that the reality of both truth and evil is far more complex and sinister than they anticipate.

Recommendation: Yoru ga Dorehodo Kurakutemo similar to Kagi no Kakatta Heya
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Yoru ga Dorehodo Kurakutemo(夜がどれほど暗くても)

2020Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerDeathJournalist Male LeadMiniseriesSuicide

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 41% similarity match.

Michinari Shiga is employed as an assistant editor at the weekly publication Shukan Jiryu, which has experienced an increase in sales thanks to its coverage of various scandals. He leads a life dedicated to journalism ethics, until his own son, who is in university, commits a double murder before taking his own life. Now, instead of uncovering scandals, Shiga is thrust into the midst of one. Facing pressure from his colleagues, he is demoted to a monthly magazine and his marriage begins to deteriorate rapidly. Despite his challenging circumstances, Shiga is resolute in his mission to uncover the truth surrounding his son's actions.

Recommendation: Last One Standing (2008) similar to Kagi no Kakatta Heya
40%Match
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Last One Standing (2008)(與敵同行)

2008Hong Kong
DramaInvestigationMurderMysterySuspenseThrillerDeathWrongfully Accused

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 40% similarity match.

Cheung Sing Hei served time in prison after being convicted of killing his stepfather. Surprisingly, his cousin Tong Lap Yeen was the main witness in the case. After a decade behind bars, Sing Hei is released, only to find that Lap Yeen has become a prominent figure in the city, while his own reputation is tarnished. Feeling frustrated and suspicious about the events of ten years ago, Sing Hei is determined to uncover the truth behind his stepfather's murder. Through his own investigation, he identifies the true culprit, but struggles to find a motive or concrete evidence. This is a story of Sing Hei's quest to reveal the truth and clear his name.

Recommendation: Namonaki Fukushuusha ZEGEN similar to Kagi no Kakatta Heya
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Namonaki Fukushuusha ZEGEN(名もなき復讐者 ZEGEN)

2019Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerMiniseriesRevenge

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 40% similarity match.

The series follows the story of the main character "Zegen" as he pursues vengeance following his wife's tragic death. Li Xue Lan arrives in Japan to seek employment to cover her husband's medical expenses back in China. With Zegen's help, she starts working at a massage parlor in Kawasaki. Worried about her situation due to her temporary visa, he suggests a fake marriage with an older man. Inspired by Jou Tomioka's novel.

Recommendation: The Long Night similar to Kagi no Kakatta Heya
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The Long Night(沉默的真相)

2020China
Novel AdaptationDramaInvestigationMysterySmart Male LeadSuspenseThrillerConspiracyCorruptionCrime Against MoralityPsychologicalWeb Series

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Smart Male Lead, Suspense, and Thriller themes with a 39% similarity match.

The murder case initially seemed straightforward, with numerous witnesses observing the suspect attempting to dispose of a body and a confession from the suspect himself. However, as the case progressed to court, the prosecutor uncovered that there was more to the situation than met the eye. The murder turned out to be a facade for a more disturbing injustice. The prosecutor dedicated a decade of his life unraveling the truth, sacrificing his youth, career, reputation, family, and ultimately his life in the process. (DramaWiki)

Recommendation: Medical Examiner Dr. Qin: Silent Evidence similar to Kagi no Kakatta Heya
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Medical Examiner Dr. Qin: Silent Evidence(法医秦明之无声的证词)

2021China
Novel AdaptationEccentric Male LeadInvestigationMurderMysterySuspenseThrillerCohabitationDifficult ChildhoodForensic Medical Examiner Male LeadSerial KillingsSlight Comedy

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Eccentric Male Lead, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 39% similarity match.

Young and talented Qin Ming has recently entered the workforce. With the support of Lin Dang and others, he overcomes his childhood trauma and becomes a respected medical examiner in charge of the entire bureau. When a new murder occurs with similarities to one from 15 years ago, doubts arise about whether the wrong person was caught or if the murderer had an accomplice. Qin Ming is haunted by nightmares and memories from the past once again.

Recommendation: The Truth (2020) similar to Kagi no Kakatta Heya
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The Truth (2020)(凶案现场)

2020China
Novel AdaptationInvestigationMurderMysterySmart Male LeadSuspenseThrillerDeathDetective FictionDetective Male LeadRevengeWeb Series

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Murder, Mystery, Smart Male Lead, Suspense, and Thriller themes with a 39% similarity match.

The ongoing investigation into a homicide from a decade ago exposes the depths of human depravity and reveals a carefully orchestrated act of vengeance. Feng Lang, a brilliant detective, uncovers a disturbing plot linked to a pharmaceutical company from the past while working on various cases. Teaming up with the youthful officer Fan Yun and a team of investigators, they must use their intellect and determination to unravel the enigma.

Recommendation: Century Lao Che similar to Kagi no Kakatta Heya
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Century Lao Che(百年老宅)

2009China
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Recommendation: Be Irreconcilable similar to Kagi no Kakatta Heya
38%Match
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Be Irreconcilable(势不两立)

2014China
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Recommendation: Two Women in the War similar to Kagi no Kakatta Heya
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Two Women in the War(兩個女人的戰爭)

2016China
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Recommendation: Double Characters similar to Kagi no Kakatta Heya
38%Match
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Double Characters(夜行人)

2017China
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Three years ago, Tang Ming Xuan's wife Xie Wei passed away in what was believed to be a suicide, a situation that has troubled the family ever since. At the wedding ceremony of Ke Yuan and Ming Xuan three years later, new information came to light when a mysterious individual, Solution Days, appeared, bringing back memories of the past. Ke Yuan stood by Ming Xuan, refusing to believe Solution Days' accusations and remaining convinced of Ming Xuan's innocence. Solution Days suspected foul play in Xie Wei's death and set out to uncover the truth, using various tactics to take control of the company and investigate the real cause of Xie Wei's demise. As new evidence emerged, the hidden secrets surrounding Ming Xuan began to unravel, bringing danger closer to Ke Yuan as she navigated a world of love and deception. Ultimately, Ming Xuan's true nature was revealed.

Recommendation: Summer Heat (2006) similar to Kagi no Kakatta Heya
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Summer Heat (2006)(心慌、心郁、逐個捉)

2006Hong Kong
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

When Sui Ning was young, she had a close bond with her father after her mother passed away. However, as she got older, their relationship became strained. Sui Ning became consumed with work and found her father irritating. One day, her father invited her to visit their ancestral village for a vacation. Sui Ning couldn't understand why her father was so attached to his hometown. When she was called back to work, her father decided to go alone. Later that night, Sui Ning rushed to the village after finishing work, only to find her father's yacht had exploded. Believing her father was inside, she contacted her police officer boyfriend Lau Ho Fat. Despite their efforts to search the water, her father's body was not found. Sui Ning suspected foul play and began to distrust the villagers, uncovering her father's troubled history with them. Will she be able to uncover the truth and find the person responsible for her father's death?

Recommendation: Double Characters Season 2 similar to Kagi no Kakatta Heya
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Double Characters Season 2(夜行人二)

2017China
DramaInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Recommendation: Wind Chime similar to Kagi no Kakatta Heya
38%Match
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Wind Chime(示铃录)

2016China
Novel AdaptationInvestigationMysterySuspenseThriller

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

The narrative centers around Ji Tang Tang, who uses her unique abilities and specialized tools to unravel mysteries on behalf of the deceased. Once a cheerful girl surrounded by loving parents, she tragically lost them one fateful night. Fearing connection with others, she has roamed alone for four years, growing into a strong and self-reliant individual unafraid of danger. Yue Feng, a righteous companion, stands by her side as she navigates through her adventures. Extracted from Wei Yu's novel "The Voice of Death" ( ).

Recommendation: The Doll Master (2017) similar to Kagi no Kakatta Heya
38%Match
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The Doll Master (2017)(人偶师)

2017China
DramaInvestigationMurderMysterySuspenseThrillerDeathDetective FictionDetective Male Lead

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 38% similarity match.

In reality, every individual on this planet is like a marionette, with invisible strings controlling their actions. Two decades ago, the renowned psychologist Ouyang Qiu, along with his friend and colleague Ruan Haotian, traveled to Dawn City for a confidential research project. Tragically, Ouyang met his demise by falling from a building, while Dr. Ruan vanished under mysterious circumstances. Subsequently, the project was abruptly terminated. Fast forward twenty years, Ouyang Qiu's son, Ouyang Yiming, has grown up and joined a specialized SCI Team as an agent. When a gruesome mutilation case arises in Dawn City, Ouyang Yiming takes it upon himself to investigate. However, just as he nears a breakthrough, the perpetrator takes their own life, prompting Ouyang to delve deeper into the mystery. As the investigation unfolds, it becomes apparent that Pandora's Box is on the verge of being opened... (Q1Q2)

Recommendation: Phoenix Rising similar to Kagi no Kakatta Heya
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Phoenix Rising(蘭花劫)

2008Hong Kong
DramaInvestigationMurderMysterySuspenseThrillerCrimeDeathPrison Setting

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Crystal, Louisa, and Leila grew up as siblings after being orphaned at a young age. Each of them was adopted into different families with diverse backgrounds. When Louisa was imprisoned for a crime she committed, Crystal took the blame to protect her sister. Leila, known for her kindness, attempted to help by falsifying evidence but ended up being incarcerated as well. Tensions between the three sisters and the prison owner escalate, leading to a desire for revenge. This series delves into the underworld of women in prison, exploring their struggles and conflicts.

Recommendation: Galileo Season 2 similar to Kagi no Kakatta Heya
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Galileo Season 2(ガリレオ)

2013Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerDetective FictionPhysicsProfessor Male Lead

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Manabu Yukawa, the brilliant physicist, is known for his exceptional talents and flawless character. Despite his good looks, athletic abilities, and sharp intellect, he has a disdain for children and can exhibit unreasonable behavior, earning him the nickname "the eccentric Galileo" among his peers. How will the clever Galileo tackle the otherworldly puzzles presented to him this time? Misa Kishitani, a detective with the Tokyo Metropolitan Police Department's investigation unit, prides herself on her intelligence but also has a sadistic streak. A new addition to the TV series, her role will take on the responsibilities previously held by Kaoru Uchiumi. Taken from the novels "Galileo no Kunou", "Seijo no Kyuusai", "Kyozou no Doukeshi", and "Kindan no Majutsu" by Higashino Keigo.

Recommendation: Shotai similar to Kagi no Kakatta Heya
38%Match
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Shotai(正体)

2022Japan
Novel AdaptationInvestigationMurderMysterySuspenseThrillerDeathMiniseriesPrisoner Male Lead

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Kaburagi Keiichi was taken into custody on suspicion of murder and given the death penalty. He managed to escape from prison during transport, but instead of fleeing, he helped the individuals he encountered in his hiding spot. As these individuals discovered Kaburagi's identity as a death row escapee, they questioned whether he was truly a killer.

Recommendation: Tokyo Vice Season 2 similar to Kagi no Kakatta Heya
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Tokyo Vice Season 2(TOKYO VICE Season2)

2024Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerCo-producedCrimeMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Drawing inspiration from the memoir "Tokyo Vice: An American Journalist Covering the Police Beat in Japan" by Jake Adelstein, this project is a joint production with the United States.

Recommendation: Bluetick similar to Kagi no Kakatta Heya
38%Match
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Bluetick(已讀不回)

2018Hong Kong
Novel AdaptationInvestigationMurderMysterySuspenseThrillerCo-producedDeathFuneral

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Join the suspenseful journey of ten strangers at a funeral who are entangled in a web of mystery and danger

Recommendation: Sunrise on the River similar to Kagi no Kakatta Heya
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Sunrise on the River(江河日上)

2024China
Novel AdaptationDramaInvestigationMysterySuspenseThrillerCity SettingEnvironmental IssuesSocial Issues

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

In H province's Qijiang City, an outbreak of blue-green algae occurred. Vice Mayor Wang Wu, responsible for environmental protection, had to take a break from his duties due to exhaustion. Renowned environmental protection expert Lin Han Jiang was appointed as the new director of the Environmental Protection Bureau of Qijiang City. Upon assuming his new role, Lin Han Jiang discovered that cyanobacteria posed a significant environmental threat, as revealed by years of water sample testing in Qijiang. With the organization's support, Lin Han Jiang fearlessly investigated the true cause of the blue-green algae outbreak, determined not only to address the immediate issue but also to improve the overall water quality of the Qijiang River. Addressing the root causes of environmental pollution in Qijiang was crucial, involving not just the city's largest industrial park but also the night market and boiler plant, all of which impacted residents' daily lives. Balancing economic growth with ecological preservation presented a challenging dilemma. Despite the obstacles, Lin Han Jiang remained steadfast in his commitment, ultimately restoring clean water and green landscapes to Qijiang while providing a model for effective ecological and economic harmony.

Recommendation: Utsubokazura no Yume similar to Kagi no Kakatta Heya
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Utsubokazura no Yume(ウツボカズラの夢)

2017Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerMiniseriesPsychological ManipulationTransformation

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Saito Mifuyu, an 18-year-old girl from Nagano, had a simple upbringing. After her mother passed away, her father brought his new partner into their home, leaving Mifuyu feeling displaced. She received an invitation from her late mother's cousin, Kashimada Naoko, to stay at their luxurious house in Tokyo. Feeling envious of their wealth, Mifuyu decided to integrate herself into the Kashimada family. In the process, she transformed into a cunning girl who manipulated others to achieve her desires, much like a pitcher plant.

Recommendation: Onna no Naka ni Iru Tanin similar to Kagi no Kakatta Heya
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Onna no Naka ni Iru Tanin(女の中にいる他人)

2017Japan
Novel AdaptationInvestigationMurderMysterySuspenseThrillerDeathFamilyMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Tanuma Yuriko is a homemaker residing with her spouse Kazuo, their two kids, and mother-in-law Hatsue. When Saori, the spouse of Kazuo's friend Kusumoto Masafumi, is found murdered, Kazuo admits to having an affair with her. Yuriko suspects him of being responsible for Saori's death. Despite Kazuo's attempt to turn himself in to the authorities, Yuriko stops him, choosing to conceal his crime to maintain their family's tranquility. As Yuriko grapples with the situation, a newfound determination to protect her family emerges within her.

Recommendation: Kanojotachi no Hanzai similar to Kagi no Kakatta Heya
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Kanojotachi no Hanzai(彼女たちの犯罪)

2023Japan
Novel AdaptationDramaInvestigationMysterySuspenseThrillerDetective Female LeadHousewife LeadMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Mystery, Suspense, and Thriller themes with a 38% similarity match.

Himura Mayumi, Jinno Yukari, and Kumazawa Riko come from diverse backgrounds with seemingly no connections between them. However, their lives take unexpected turns due to a missing woman's case, leading to the revelation of their hidden secrets and the truth behind the investigation. Himura Mayumi, a 32-year-old single woman working in the public relations department of a large clothing company, faces challenges at work and desires marriage as an escape. Despite her longing for ordinary happiness, the prospect of marriage now brings her anxiety. Jinno Yukari, a 34-year-old housewife from a wealthy family, leads a seemingly comfortable life but feels lonely due to the lack of children and her husband's distant behavior. Like Himura Mayumi, she also yearns for ordinary happiness. Meanwhile, Kumazawa Riko, a 29-year-old rookie detective, recently joined the detective division and shares the same desire for a sense of ordinary happiness in her life.

Recommendation: A Murderous Affair in Horizon Tower similar to Kagi no Kakatta Heya
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A Murderous Affair in Horizon Tower(摩天大楼)

2020China
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerBlackmailDeathFoster CareFriendshipMental IllnessPoor Family

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Zhong Mei Bao, the owner of a charming café, was discovered deceased in her apartment at Horizon Tower, her face adorned with doll-like makeup

Recommendation: Medical Examiner Dr. Qin similar to Kagi no Kakatta Heya
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Medical Examiner Dr. Qin(法医秦明)

2016China
Novel AdaptationDramaEccentric Male LeadInvestigationMurderMysterySmart Male LeadBromanceDetective Male LeadEccentric Female LeadForensic Medical Examiner Male LeadMedicalSmart Female Lead

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Eccentric Male Lead, Investigation, Murder, Mystery, and Smart Male Lead themes with a 37% similarity match.

Qin Ming's assistant left due to his difficult and unusual temperament

Recommendation: Joker Yurusarezaru Sousakan similar to Kagi no Kakatta Heya
37%Match
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Joker Yurusarezaru Sousakan(ジョーカー 許されざる捜査)

2010Japan
DramaEccentric Male LeadEpisodic FormatInvestigationMysterySuspenseThrillerAntihero Male LeadBromanceDetective Male LeadInterrogator Male LeadPolice Department SettingPsychological

Like Kagi no Kakatta Heya, this drama also features Drama, Eccentric Male Lead, Episodic Format, Investigation, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Detective Kazuyoshi Date works for the Kanagawa prefectural police force. By day, he is nicknamed "Buddha" due to his calm demeanor and dedication to solving cases. But at night, he becomes a ruthless punisher fueled by his anger towards criminals. The series delves into themes of justice and evil, questioning their true nature. (Tokyograph)

Recommendation: Henshin Interviewer no Yuuutsu similar to Kagi no Kakatta Heya
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Henshin Interviewer no Yuuutsu( 変身インタビュアーの憂鬱 )

2013Japan
DramaEccentric Male LeadInvestigationMurderMysterySuspenseThrillerComedyDeathDouble IdentityMiniseriesTown SecretWriter Male Lead

Like Kagi no Kakatta Heya, this drama also features Drama, Eccentric Male Lead, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Shirakawa Jiro, a renowned author specializing in mystery novels filled with intricate plots, finds himself facing writer's block while working on his 100th book, following the success of his previous 99 bestsellers. Adopting the persona of skilled interviewer Aonuma Kiryu, he delves into the perplexing Tulip Murders - a series of gruesome homicides targeting housewives occurring a year apart. Utilizing his keen intellect and the support of his editor, he delves into the hidden secrets of the town, pursuing a real-life mystery rather than mere facts.

Recommendation: Cold Case: Shinjitsu no Tobira similar to Kagi no Kakatta Heya
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Cold Case: Shinjitsu no Tobira(コールドケース ~真実の扉~)

2016Japan
DramaEpisodic FormatInvestigationMurderMysterySuspenseThrillerDeathDetective Female LeadDetective FictionDetective Male LeadMiniseriesPolice Department Setting

Like Kagi no Kakatta Heya, this drama also features Drama, Episodic Format, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Yuri Ishikawa and her colleagues work on solving long-standing unsolved cases in Kanagawa Prefecture, Japan. This project is inspired by the American television show "Cold Case" from 2003.

Recommendation: Through the Darkness similar to Kagi no Kakatta Heya
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Through the Darkness(악의 마음을 읽는 자들)

2022South Korea
Calm Male LeadDramaInvestigationMurderMysterySuspenseThriller1990s2000sDeathEmpathic Male LeadOffender ProfilingTime Skip

Like Kagi no Kakatta Heya, this drama also features Calm Male Lead, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

During the 1990s in Seoul, an enigmatic murderer dubbed 'Red Cap' instills fear in the city by carrying out ruthless, unpredictable attacks on women, leaving law enforcement officials helpless. In an attempt to capture the culprit, Kook Yeong Su, leader of the Criminal Behavioral Analysis unit, enlists the help of former detective Song Ha Yeong, a sharp but introverted individual, to utilize criminal profiling strategies. Despite initial doubts, homicide specialist Yun Tae Gu and her team must have faith in this innovative approach to crack the case. As Song grapples with the intricacies of understanding criminals, he must also face the emotional burden of his job.

Recommendation: Ishi no Mayu similar to Kagi no Kakatta Heya
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Ishi no Mayu(石の繭 殺人分析班)

2015Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerDeathDetective Female LeadFather-Daughter RelationshipMiniseriesMother-Daughter RelationshipRevenge

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Toko Kisaragi, a fresh addition to the female detective team, recently joined the 11th Section of the 1st Investigation Division at the Tokyo Metropolitan Police Department, fulfilling her desire to follow in her father's footsteps. A murder case was reported on March 9, with the victim's body discovered encased in cement. The following day, the perpetrator, who goes by the name Toremi, boldly contacts the police department. Kisaragi is appointed as Toremi's point of contact, as he continues to disrupt the investigation by providing details about his crimes. Toremi eventually leads the police to another crime scene where another victim's body is found cemented.

Recommendation: Ryojin no Ono similar to Kagi no Kakatta Heya
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Ryojin no Ono(両刃の斧)

2022Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerDeathDetective FictionDetective Male LeadMiniseriesPolice Officer Male LeadRevenge

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Detective Shibasaki Sachio's daughter, who was a member of the First Investigation Division, is tragically murdered. Together with Kawasumi Shigekatsu, a young detective who looks up to Shibasaki as a mentor, they try to uncover the truth behind the heinous crime. Despite their efforts, the case remains unsolved. Fast forward 15 years, Shibasaki is now retired and caring for his sick wife, Miwako. Things take a turn when a new unit is formed to reinvestigate cold cases, with Kawasumi joining the team. As they revisit the case, a suspect emerges, leading Shibasaki to seek justice on his own. A fateful phone call sets off a chain of events that ultimately lands him in a difficult situation. (jdramas.wordpress.com)

Recommendation: The Killer's Shopping List similar to Kagi no Kakatta Heya
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The Killer's Shopping List(살인자의 쇼핑목록)

2022South Korea
Novel AdaptationInvestigationMurderMysterySmart Male LeadSuspenseThrillerComedyDeathInvestigator Female LeadMiniseriesPolice Officer Female LeadViolence Against Children

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Murder, Mystery, Smart Male Lead, Suspense, and Thriller themes with a 37% similarity match.

Despite his impressive memory, Ahn Dae Sung has not been successful in passing the civil service exam for three consecutive years. However, with the unwavering support from his mother, Myung Sook, and girlfriend, Ah Hee, he remains determined to succeed. One day, while working at his mother's convenience store, Dae Sung's life takes a drastic turn when a murder occurs nearby. Ah Hee, who is a police officer, decides to investigate the case independently and uncovers a receipt from Myung Sook's store at the crime scene, implicating them in the investigation. Without any solid leads, the trio is committed to solving the case. But how will they be able to catch the killer when even the professionals are at a loss?

Recommendation: Seiren no Zange similar to Kagi no Kakatta Heya
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Seiren no Zange(セイレーンの懺悔)

2020Japan
Novel AdaptationDramaInvestigationMurderMysterySuspenseThrillerAttempted SuicideDeathKidnappingReporter Female LeadSchool BullyingTrauma

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Takami has been employed as a journalist for two years at a television station. She is part of the team behind the news show "Afternoon Japan," which is currently facing the threat of cancellation. Takami takes great pride in her work as a journalist. When a high school girl goes missing, Takami and her colleague Taichi set out to cover the story in the hopes of saving their news program. While following a police officer, Takami comes across the body of the victim, who had been brutally murdered.

Recommendation: Why Try to Change Me Now similar to Kagi no Kakatta Heya
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Why Try to Change Me Now(平原上的摩西)

2023China
Novel AdaptationDramaInvestigationMurderMysterySuspenseThriller1990sChildhood Friends RelationshipDeathFriendshipPolice Officer Male LeadSlow Burn Story

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Drama, Investigation, Murder, Mystery, Suspense, and Thriller themes with a 37% similarity match.

Located in the gritty industrial region of northeastern China, this story follows a young police officer as he delves into the investigation of a taxi driver's murder. As he uncovers clues, he realizes that a childhood friend may have a connection to the crime. Unraveling the mystery layer by layer, he exposes a past that was buried 12 years ago. This storyline is based on the novel "Moses on the Plain" by Shuang Xue Tao.

Recommendation: Brave Wuju similar to Kagi no Kakatta Heya
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Brave Wuju(勇者无惧)

2022China
DramaInvestigationMysterySuspenseThrillerAction

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

To uncover the truth behind his former colleague's death, border police officer Wu Ju embarks on a dangerous mission as an undercover agent in a high-stakes anti-drug operation. Wu Ju teams up with Qi Tian, the son of a notorious drug lord, to seek vengeance for his fallen comrade. Together, they evade a relentless pursuer and discover that a mysterious figure known as "Doctor" is the true mastermind behind the criminal network. As Wu Ju infiltrates "Doctor's" inner circle, he must outwit both ruthless drug traffickers and unsuspecting police detective An Ning. Through bravery and cunning, Wu Ju confronts formidable adversaries and faces personal challenges until he can ultimately dismantle the drug cartel.

Recommendation: Into Thin Air similar to Kagi no Kakatta Heya
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Into Thin Air(人間蒸發 / 人间蒸发)

2005Hong Kong
DramaInvestigationMysterySuspenseThrillerRomance

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

Michael Miu, portraying the character Ko Chung Ching, left his position as a police officer to establish a private detective agency following the disappearance of his son, Tsun Sing. This happened while Miu was investigating the "Rose Killer" case. His team consists of Power Chan as Man Kai Ching Super, Bernice Liu as Man Tai Po, and Vivien Yeo as Lam Yan Yan. Kenneth Ma plays a police officer who becomes involved in the "Rose Killer" investigation alongside Miu. Ching continues the search for his son, meeting Melissa Ng's character Lai Siu, who manages a group of part-time actors. Lai Siu discovers her connection to Sing's disappearance and agrees to assist in locating him out of feelings of guilt.

Recommendation: Greed Mask similar to Kagi no Kakatta Heya
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Greed Mask(謎情家族)

2006Hong Kong
DramaInvestigationMysterySuspenseThrillerRomance

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

Ko Fung is the heir to a successful cosmetics company, where his girlfriend Lok Pui Pui serves as the brand ambassador. During a promotional event for their new makeup line, Pui Pui shocked everyone by appearing in a red traditional dress instead of the planned wedding gown, before suddenly collapsing. Rumors spread that she may have been targeted by the vengeful spirit of a deceased celebrity, known for inspiring copycat suicides. Si To San, a company employee, was later invited to dinner at Ko Fung's home by his father, who claimed to be close friends with Si To San's uncle. Tragically, Ko Fung's father was discovered dead in his study weeks later. With numerous suspects in the mix, it is now up to Ko Fung, Si To San, and Zhou Yee Tong to solve the mystery, unless one of them is the culprit themselves.

Recommendation: Love Exchange similar to Kagi no Kakatta Heya
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Love Exchange(疑情別戀)

2008Hong Kong
DramaInvestigationMysterySuspenseThrillerInfidelity

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

A man and a woman were discovered deceased in a vehicle. Zita Sit Chi-Yiu (Anita Yuen) finds out that the man is her spouse, Dick Ling Ho-Leung (Eddie Kwan), and the woman is named Bonnie Fong Cheuk-Ling (Angela Tong). Devastated by her husband's passing, Zita is also saddened to learn about his extramarital affair. Unexpectedly, Mike Yiu Lap-Tin (Michael Miu), an old school friend of Dick's, appears and offers her support. Eventually, Zita learns that Mike, who is employed by a security company, is actually Bonnie's husband and not an acquaintance of Dick's at all.

Recommendation: Hyoryu Net Cafe similar to Kagi no Kakatta Heya
36%Match
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Hyoryu Net Cafe(漂流ネットカフェ)

2009Japan
DramaInvestigationMysterySuspenseThrillerAdapted From A Manga

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

It all began at a cyber cafe. Toki Koichi, a soon-to-be father living a mundane life, encounters his first love Kaho from junior high school after a heated argument with his wife. A mysterious incident at the cafe causes a blackout and traps Koichi and Kaho inside overnight. When they emerge the next day, they discover a completely transformed world. Determined to uncover the reason behind their sudden transportation and return home, Koichi faces various challenges and mysteries as people start disappearing. Will they survive this crisis and unravel the secret of Koichi's past with Kaho?

Recommendation: Kiri ni Sumu Akuma similar to Kagi no Kakatta Heya
36%Match
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Kiri ni Sumu Akuma(霧に棲む悪魔)

2011Japan
Novel AdaptationInvestigationMysterySuspenseThrillerRomance

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

Tatsumura Kei, the recipient of a significant inheritance, receives a letter revealing shocking news about his fiancée, who was soon to be married. The letter describes the fiancée as a malicious individual. Surprisingly, the sender of the letter is a mysterious woman clad in white robes, bearing a striking resemblance to Kei. (Fuji TV)

Recommendation: Keiji Yoshinaga Seiichi: Namida no Jikenbo similar to Kagi no Kakatta Heya
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Keiji Yoshinaga Seiichi: Namida no Jikenbo(刑事吉永誠一 涙の事件簿)

2013Japan
Novel AdaptationInvestigationMysterySuspenseThrillerMiniseries

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

Yoshinaga Seiichi works as a detective at the Kanagawa-ken Police Department, where his dedication to his work extends beyond solving crime cases to assisting those in need. Joining him as his new colleague is Kagami Shinichi, and their first assignment together involves investigating the discovery of a deceased woman in a basement carpark.

Recommendation: Mikkoku wa Utau Season 2 similar to Kagi no Kakatta Heya
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Mikkoku wa Utau Season 2(密告はうたう2)

2024Japan
DramaInvestigationMysterySuspenseThrillerMiniseries

Like Kagi no Kakatta Heya, this drama also features Drama, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

The First Personnel Division of the Tokyo Metropolitan Police Department is a specialized team tasked with conducting inspections to uncover misconduct among the large workforce of over 40,000 personnel in the police department. Simply being under inspection can potentially ruin a police officer's career. Inspectors like Sara Masaki are known as the police within the police, carrying out their duties in solitude. After two years, Sara stumbles upon a conspiracy that will have far-reaching implications for the entire police organization.

Recommendation: Nomen Kenji similar to Kagi no Kakatta Heya
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Nomen Kenji(能面検事)

2025Japan
Novel AdaptationInvestigationMysterySuspenseThrillerProsecutor Male Lead

Like Kagi no Kakatta Heya, this drama also features Novel Adaptation, Investigation, Mystery, Suspense, and Thriller themes with a 36% similarity match.

This legal thriller features Fuwa Shuntaro, the top prosecutor at the Osaka District Public Prosecutors' Office, as he seeks the truth of a case, disregarding the influence of higher authorities in the prosecution and police. Known as the "Noh Mask Prosecutor," Fuwa approaches his work with a calm and composed demeanor. Each episode tackles a societal issue linked to the darker aspects of Japanese culture, revealing the tendency of the police to conceal information and highlighting the bureaucratic characteristics of the prosecution.