Top 250 Movies Like Detective Investigation Files

A Hong Kong Special Branch cop and a CIA agent reluctantly team up to bring down a major international terrorist.

"A woman is born to give her body to men; her father or strangers should make no difference." Respectable Police Commissioner Josephine reinvestigates an insignificant murder case of a 11 years old girl. The murderer is the mother of the victim, Becky. Under intense interrogation, Becky refused to admit that she knew all along that her boyfriend was raping her little daughter at home. The harsh interrogation drives Becky into killing herself. What is the truth that the raging Commissioner is trying to find out? What is the seemingly defenseless mother hiding? Or is she acually telling the truth? Is the phrase, "A woman is born to give her body to men." the whole truth?

A computer engineer is kidnapped and tortured. Since then, his girlfriend senses he's no longer the same person, and becomes convinced that something supernatural is corrupting his soul. The cop assigned to the case is also determined to get to the bottom of the case. The truth is more frightening than either had anticipated.

Joyce, a homicide detective finds herself in a new case: a woman is raped and murdered, her hands tied and her tongue cut off. Shocking as that is, the exact same thing happened to Joyce's mother twenty years ago.

The head of the Organized Crime and Triad Bureau, Inspector San Lee, will do anything to put triad boss Tung in jail.

A Hong Kong mobster's sister is working with authorities on their investigation into her own brother's plot to assassinate the Queen.

Cheung Sung-bong is a highly respected cop with a long history of success in dangerous cases. However, his past soon comes back to haunt him when a former protégé resurfaces, seeking revenge.

Police inspector and excellent hostage negotiator Ho Sheung-Sang finds himself in over his head when he is pulled into a 72 hour game by a cancer suffering criminal out for vengeance on Hong Kong's organized crime syndicates.

Mob assassin Jeffrey is no ordinary hired gun; the best in his business, he views his chosen profession as a calling rather than simply a job. So, when beautiful nightclub chanteuse Jennie is blinded in the crossfire of his most recent hit, Jeffrey chooses to retire after one last job to pay for his unintended victim's sight-restoring operation. But when Jeffrey is double-crossed, he reluctantly joins forces with a rogue policeman to make things right.

A horrid crime was committed at a wedding reception and bridesmaid Chi Ching was the lone eyewitness. At the police station, she recognised the suspect, Suen Ling, in a line up. She also discovered the affair between this stranger and her lover. All of a sudden the emotional turmoil surrounding her chronic illness resurfaced and quickly grew beyond control.

Baldy and King Kong shuttle between New Zealand and Hong Kong to recover a hi-tech prism that can impart superhuman powers.

One rainy night in an arms factory near Shanghai, a young female worker accused of stealing a box of bullets from the ruthless Boss Ding is violently killed in a game of Russian roulette. Half a month later, a series of inexplicable deaths takes place in the factory, where the victims are shot but no bullets are found. Rumors of a deadly curse begin to spread in the factory, terrorizing the workers there. So, eccentric police inspector Song Donglu and his hot-blooded, gunslinging partner Guo Zhui are sent in to investigate the mystery of the phantom bullets...

A detective tracks down a gang of criminals ten years after they initially evaded arrest.

Ko Chow is an undercover cop who is under pressure from all sides. His boss, Inspector Lau, wants him to infiltrate a gang of ruthless jewel thieves; his girlfriend wants him to commit to marriage or she will leave Hong Kong with another lover; and he is being pursued by other cops who are unaware that he is a colleague. Chow would rather quit the force, feeling guilty about betraying gang members who have become his friends.

Five police officers in Hong Kong are kidnapped. The police commissioner is on a business trip overseas. Two vice commissioners, Sean Rau and M.B. Lee, then take over the case. The two vice commissioners are rivals who both vie for the police commissioner seat. At first, M.B. Lee takes the lead in the case, but comes to a dead end. Sean Lau then takes the lead, but he falls into a trap. Both men are then investigated by the ICAC (Independent Commission Against Corruption).

It's vacation time for Carter as he finds himself alongside Lee in Hong Kong wishing for more excitement. While Carter wants to party and meet the ladies, Lee is out to track down a Triad gang lord who may be responsible for killing two men at the American Embassy. Things get complicated as the pair stumble onto a counterfeiting plot. The boys are soon up to their necks in fist fights and life-threatening situations. A trip back to the U.S. may provide the answers about the bombing, the counterfeiting, and the true allegiance of sexy customs agent Isabella.

A cop who loses his partner in a shoot-out with gun smugglers goes on a mission to catch them. In order to get closer to the leaders of the ring he joins forces with an undercover cop who's working as a gangster hitman. They use all means of excessive force to find them.

During a bank heist, getaway driver Wah takes a young woman Jo Jo hostage. After preventing his accomplices from killing her, they begin a forbidden relationship that causes mayhem and chaos for their friends and family.

Detective Sergeant Ma Jun, known for dispensing his own brand of justice during arrests, teams up with an undercover cop, Wilson, to try and bring down three merciless Vietnamese brothers running a smuggling ring in the months before mainland China's takeover of Hong Kong. Jun pursues the gang tirelessly, sometimes ignoring police protocols. A showdown is inevitable!

Duke Togo (codename: Golgo 13) is a ruthless assassin who's accepted a tricky assignment from an American drug syndicate. His mission is to "rub out" Hong Kong's underworld kingpin. His main obstacle is the relentless Detective 'Smitty' Smith, determined to stop Togo no matter the cost. The result is an explosive adventure through the seamy, violent streets of Hong Kong.

A detective from Hong Kong teams up with an American gambler to battle against a notorious Chinese criminal.

Gui Xiang is super clever girl with low EQ. She investigates into a murder case in competition with a young police detective.

The head of an elite Hong Kong surveillance unit keeps one eye on his rookie apprentice and the other on a notorious criminal he suspects of masterminding a recent jewel heist in this tense thriller from filmmaking duo Johnnie To and Nai-Hoi Yau. Of course, the criminal knows all along he's being watched. But that doesn't stop him from trying to pull off the biggest score of his career.

A street racer encounters a mainland courtesan under an extraordinary circumstances. A moment of Romance between them follows after.

The Hong Kong super-cop must stop a group of blackmailing bombers at the same time that the villains of the first Police Story are out for revenge.

Australian authorities arrest a man believed to be connected to the Sydney criminal underworld and send for Inspector Fang Sing Leng from Hong Kong to question him. After the alleged criminal is assassinated, Inspector Leng and the Sydney police try to hunt down those responsible and hope to solve their case along the way.

A special agent is assigned to protect a wealthy business magnate. However, when the businessman is kidnapped in a daring ambush, he teams up with a seasoned detective to crack the case. But soon he discovers the case isn't that simple.

Four young officers of the Hong Kong Police are joined together to fight against organised crime using all possible means, even if this would lead them to break the law… Their first assignment is to eliminate a gang of criminals who have stolen a shipload of explosives.

On the eve of the 1997 handover, violence is rampant as the British Hong Kong government has joined forces with the triads to cause chaos in Hong Kong. The gang leader, Lam Yiu-Cheong assigns his crony Ah Lok to take an important role in the destruction. But Lok harbours a secret – he’s an undercover policeman and he’s about to discover a political conspiracy that will shock the country to its core.

Bear and Satay are two cops who got moved to the Cop Shop Babes brigade, where they can chat up policewomen. But bomb expert Fireball wants to revenge from the Cop Shop Babes chief (Carina Lau) and the girls.

In a small Amish community, three barns are burnt down almost simultaneously. FBI agent Sally Russwell is sent in to investigate this possible hate crime. What she finds however is a community that little trust for outsiders or "The English" as they call them. However, in her investigations, Agent Russell makes friends with one entrepreneurial widow, Annie Beiler who has her own curiosity about this stranger. Together, Annie introduces Russell in-depth to this close knit community bearing many appealing attributes. However, as Sally's investigations continue, she discovers secrets that reveal uncomfortable truths about the religious community that are linked to the arson attacks.

In this prequel to the original, a bloody power struggle among the Triads coincides with the 1997 handover of Hong Kong, setting up the events of the first film.

While Yeung Kam Wing is trying to remove all connections between the mob and him, his actions are being carefully observed by Lau Kin Ming, who bears a personal grudge against him.

The film chronicles the rise and fall of a corrupt police force that Lee Rock becomes a part of.

Bun, a schizophrenic, former police inspector comes out of retirement to help a rookie detective solve a complex murder case involving a missing colleague and a suspected policeman suffering from a multiple personality disorder.

An undercover detective (Francis Ng), his lover (Amanda Lee) and a mutual friend (Christine Ng) try to catch the person who is killing Internet users.

A Hong Kong detective teams up with his female Red Chinese counterpart to stop a Chinese drug czar.

Chau and Beethoven, two Hong Kong police detectives, go through misadventures to protect a young girl from a ruthless crime lord, as she possesses a ledger that contains all of the gangster's activities. In the mix is a tough, no-nonsense policewoman, who falls for one of the detectives. Written by Oliver Chu

Based on a real murder case where a dismembered corpse of a murdered 16-year-old prostitute girl was found in Hong Kong in 2008.

An insane man is shot dead by two cops, Kung and Hsiao, after he refused to listen to them and stabbed a woman dead. After the encounter, the two cops always strange things and Hsiaos girlfriend is also haunted. To reduce the fear of hiring police a Taoist to sort out this problem ...

Follows a police tactical unit during one dangerous night on the streets of Hong Kong as they try to recover a cop's stolen gun. Things turn deadly when they run into a web of gangland crimes.

Living in the guilt of sacrificing his informant in a previous operation, Criminal Intelligence Inspector Don Lee is wary when his superior orders him to send another informant to spy on the criminal operations of Barbarian, a vicious gangster plotting a jewelry heist. He seeks ex-convict Ghost, who agrees to work for Don despite vowing to go straight since he's desperately in need of money to repay a debt and save his sister. Ghost's driving skills help him infiltrate Barbarian's gang and earn his trust, but by feeding information to Don and hooking up with Barbarian's girlfriend Dee, Ghost is pushing himself into a tight and deadly corner...

Realising that he will be defeated in no time during a police showdown, a thug shoots himself to force the cops to cease fire and take him to the hospital. In the hospital, he claims human rights to refuse immediate treatment in order to buy time for his underlings to rescue him. The detective in charge sees through his scheme but decides to play along so as to capture his whole gang once and for all.

Cops find their careers and their lives in jeopardy when they spend a gangster's bribe money after releasing him from custody during a drug bust.

Women born on the 6th June are being killed around Hong Kong. There is a lunatic on the loose. Ching, a police psychologist, looks to be the next victim. She is suffering from terrifying dreams involving the devil himself. All becomes clear when the killer is revealed as Satan's disciple, his body possessed, searching for the reincarnation of Satan's daughter on Earth.

Following his defeat by Master Ip, Cheung Tin Chi tries to make a life with his young son in Hong Kong, waiting tables at a bar that caters to expats. But it's not long before the mix of foreigners, money, and triad leaders draw him once again to the fight.

On an airliner bound for Hong Kong, Tony, a career crook who deals in stolen diamonds, agonizes over whether he should stick with his girlfriend or pursue Pamela, an intriguing novelist with whom he's instantly infatuated. Viewing Tony's dastardly deeds as great material for her new book, Pamela gladly encourages him to continue his criminal behavior.

When a mysterious animal attack leaves a mutilated body in the forest, a conservative small town detective must enlist the help of an eager wildlife specialist to uncover the dark and disturbing truth that threatens the town.

When a series of eerie murders erupts across Hong Kong, grizzled veteran Huang and his reckless younger partner Wang, are assigned to track down the killer.

The dismembered body of a hooker is found, and police arrest her pimp and his crew for the crime. During interrogation, they explain how the girl stole from her pimp, and so they group kidnapped, raped, tortured, and finally murdered and dismembered her.

An abnormal taxi driver lusts for blood every rainy night, and several young women are killed as a result. The muderer, Laiu, likes to take photos of the victims dismembered bodies as momentos. Inspector Lee is called onto the case in this bizarre thriller.

Chen Tan, a private detective in Thailand, travels to Malaysia following a series of clues found in a photo. There he searches for a man called Chai, who might help reveal the truths behind the murder of his parents 30 years ago. Chen finds Zheng, a Malaysian detective born in China. Together they meet Chai's daughter, Zi-Wei who could hold the key to cracking the case.

In Columbo's first outing, a psychiatrist uses a patient he is having an affair with to help him kill his wife, but his perfect alibi may come apart at the hands of a seemingly befuddled LAPD lieutenant.

In a city of love and prosperity, a city of lost hope and premature death, veteran detective Hei feels it all: the hurt, the helplessness, the horror. When his father-in-law, the billionaire benefactor Kim, is gruesomely murdered in his palatial mansion, he enlists the assistance of his former partner turned private detective.

A police detective must solve a brutal murder to prove his partner's innocence and unearth the truth behind Hong Kong's police force. The investigation brings him to an unlikely collaboration with an inspector from the Narcotics Bureau, whose motives may not be what they seem.

Shane MacQuade is a rising star in Hong Kong's underworld kickboxing rings... until he wins a fight he was supposed to lose. Framed for murder, running from both the Triad mob and the police, Shane escapes to America. There, a chance encounter with a professional hitman in the Nevada desert ends with Shane taking the man's identity and his life. Shane finds that the violent world he left behind in Hong Kong is too strong to escape. A crooked Las Vegas fight promoter and a stripper named Angelique draw him into a web of sex and murder that will test his martial arts skills to their limit and change his life forever.

A ninja fighter and his American girlfriend journey to Hong Kong in search of the man who murdered her father and stole a cache of diamonds.

After a failed operation that leaves several cops dead or wounded Officer Fong Jing wakes up at the hospital and discovers that he can see ghosts.

Part 1 : 'Gun Snatchers' - Two criminals wanted for murder are turned in by one of their own. Part 2: 'Arson' - A Triad revenge plan to burn down a nightclub goes wrong and results in the deaths of five people.

After suffering life changing injuries in the line of duty, bomb disposal officer Fung turns his back on the police. But when a devastating series of bombings sweep Hong Kong, the police suspect their former ally may be involved after he is found unconscious at a crime scene. Now faced with memory loss and recalling only fragments of his former life, Fung sets out to uncover the truth and find out who he really is.

A cop is losing the control of his right hand and cannot pull the trigger on time anymore. Before any accident happens, he decides to resign. Meanwhile his friend and informer is brutally murdered in Malaysia. Before leaving the force, he decides to find the killers with the help of his buddy, a young cop and an inspector from Kuala Lumpur.

Tung is a street cop in Hong Kong who's friends with a Triad named Fai. Fai hires a hit man to murder a business rival; the hit goes wrong and Fai, implicated in the incident, goes on the run.

Veteran detective Cham works with rookie cop Will to hunt down the city's serial killer. The investigation leads them to a lair littered with dismembered female limbs, and an ex-con who killed Cham's wife and child years ago...

Pop star Anna has been kidnapped. Kidnapper Jash uploads the video clip of Anna being tortured onto the internet, which instantly becomes the talk of Hong Kong. A week later, Jash contacts the police, asking not for a ransom but for retired police inspector Mo to be his police contact. Inspector Mo eventually discovers through a tabloid magazine that a self-proclaimed psychic named Shana had phoned a radio program on the day of the kidnapping to warn of the incident.

Accused of a murder he didn't commit, a prosecutor sets out on a mission to clear his name.

Two detectives who are up to their necks in trouble and in each other's face, as they try to shut down a drug-trafficking scheme that could be connected with international ties to organized crime. But in the midst of their investigation, innocent immigrant dock worker Luk Wan-Ting gets caught up in the mix when he witnesses the murder of an intelligence operative and is framed for the crime.

When Hong Kong is rocked by multiple gruesome murders, the police forms a task force to investigate. Jun, once a brilliant detective who suffered a mental breakdown, begins his own investigation. Eventually, the police learn that the murder victims are all suspects of cold cases being rubbed out by a figure known as "The Sleuth". Now, Jun and a detective from the task force are on a race against time to beat the brutal killer at its own game.

A brilliant detective is forced into early retirement after losing eyesight. Making ends meet by solving cold cases for reward money, he teams up with a rookie lady inspector to solve a case from her personal past.

A group of desperate Chinese criminals hope to make a quick, effortless score in Hong Kong. Things go afoul, and the gang must hide out until the heat dies down, besmirched with the blood of an undercover cop.

Zhou Zhengli and his boss Zhang Yunnan are working for Hong Kong Customs. When they are investigating an arms smuggling case, the Customs encounter a violent attack by an overseas force. Zhou Zhengli participates in the joint operation with the Interpol. Zhou is a brave man, not afraid of dangerous mission, but the truth might be difficult for him to accept...

The four constables Emotionless, Iron Hands , Life Snatcher and ColdBlood are specially skilled in their own individual super powers. When the four constables of the Divine Constabulary investigate a murder in the suburbs, they unexpectedly stumble on clues to the murder of Emotionless's family 15 years ago.

An Australian cop heads to Hong Kong to head off the supply of a new designer drug which raises the sexual appetite of anyone who takes it.

By a strange twist of fate, dutiful Hong Kong policeman Dan saves the life of the leader of a violent gang of armed robbers. When they commit another crime, Dan is determined to put an end to their activities. He works with the leader, whom the gang had betrayed, to engineer a plan to wreak havoc within the gang and let the gangsters kill one another. But it becomes increasingly obvious to Dan and to his colleagues that Dan is suffering from a severe mental disorder, and Dan finds that instead of upholding the law as a righteous police officer, he has now become a fugitive wanted for murder.

A suspect is killed while the ICAC team is investigating illegal soccer gambling in Hong Kong.

Mark Conrad, a habitual drunk and troublemaker with a shady past, is expelled by Hong Kong police after one too many bar fights. He's sent to Macao on the Fa Tsan, a ferry owned by Captain Hart. Conrad's papers are out of order and Macao refuses him entry. Unable to go ashore, Conrad is a permanent passenger on the ferry with Hart, who detests him. It's all one long, lazy voyage for Conrad until one fateful trip when an encounter with a typhoon and pirates forces Conrad to choose between an aimless drifter's life and becoming a man again.

Lon is an assassin who is deformed. The only man he can trust is his brother, Kwan. When Lon kills a police officer, the officer's partner tries to go after him, but lets him go after seeing his face. Meanwhile, Lon falls for Wendy, the girlfriend of Lon's sadistic boss, Dragon. When Lon agrees to kill Dragon for Wendy, it's a setup. After the kill, Lon is hit by a car and plunges into the river. A year passes by. A new man named Michael arrives, working for Wendy. Meanwhile, the partner of the cop Lon killed is still on the case. He notices a resemblance of the new man to Lon. Is Michael the same person as Lon? If so, what is the motive?

ICAC Investigator William Luk and JFIU Chief Inspector Lau Po-keung both hit a dead end in their investigation of a bribery case and a money laundering case. In the meantime, William Luk was suspended when model Eva Ng went to Inspector Kenny Ching of ICAC’s Internal Investigation Group L, to file a report against him for accepting a $12M bribe. Lau discovered Luk was set up and whoever framed Luk was connected to his case. He began to suspect the bank manager Thomson Yau was assisting a gangster, Wong Hoi-wo in money laundering activities. When Director Hong Liang of China’s Anti-Corruption & Bribery Bureau (ACBB) provided Lau with important intelligence, it became clear the money laundering activities were connected to a corrupted Vice-Ministerial Level cadre. To clear his name, William Luk put everything on the line…

A man becomes a cop in order to take down the police superintendent who may have killed his father, and that of a vengeful Triad boss.

Cheung Ye Pang (Andy Lau) is a Cantonese detective out to combat opium sellers. Encountering high-level corruption along with close friends being murdered, Pang sets out to stop the dealers.

During a period of widespread police corruption, Ti Lung is a stubborn cop who takes on both the mob and the political establishment.

The legendary 18 Bronzemen of Shaolin are unearthed after a long slumber by an evil monk. They are ready to take on the modern world, but is the world ready for them? some things don't die quietly...

Crack police officer Damon (aka: #426) is ordered to infiltrate the triad as mounting crime waves hit Hong Kong. Damon his sidekick Doggie and sex proprietress Charmagne band together to smash Satan Hong's triad gang in this high-octane action adventure.

Chan sisters Chan Meiling and Chan Meiyu are respected high class, women in Hong Kong's more upscale neighborhoods. However, they both share an alter-ego called the Black Rose, a notorious cat burglar who dresses in a black leotard, and steals from the rich to give to the poor - taking on a Robin Hood-style mission. Even with their antihero status, the Black Rose has created uneasiness and tension in the high society; therefore, an insurance detective investigates the crimes and tries to unmask the woman behind the cat mask.

A gang of chinese criminals migrate to Hong Kong in search of easy pickings. After pulling a few jobs and killing of a couple of cops, they turn their sight on Tse Sui Luen Jewelry Company. But the robbery is miserably botched. Some of the crooks are tricked and killed by police super sleuth, Detective Yuen Shiu. The criminal boss vows vengeance on Yuen and his family.

A Hong Kong homicide detective insists on the same name that his father, Rock Moon, has died and carved it deeply into his heart. In this case her mother is treated in a psychiatric hospital. Have found that their heads are the same in recent drug trafficking and crime-ridden campaigns.

Feng (Shawn Yue) is a former undercover cop whose post-assignment life has begun to rapidly disintegrate. Feng and former triad brother Fai (Sam Lee of Gen-X Cops) are caught using cocaine, and the ensuing melee leaves a police detective dead, with Fai fingered as the culprit. Fai must go on the run, but he no longer trusts Feng, who he believes may be leveraging their brotherhood for advancement in the police ranks.

Lau Lee Hung, the leader of "Drug gang" was a prison guard at the men's jail, but was fired by his supervisor because of some illegal misconduct. He successfully robbed Rainbow's $800,000 savings. Thereafter, an innocent student was drugged and raped and kept for ransom. Police officer got serious about the crimes drug gang is committing and sends for investigation. Rainbow and her husband are going to help the police to catch Lau......

During the 1990s, at a Scandinavian psychiatric hospital, a man known as Mads Lake confessed to multiple murders and was convicted. However, the uneasy triumvirate of Mads, therapist Anna Rudebeck and policeman Soren Rank, all have a vested interest in unearthing the truth, and a deepening co-dependency threatens to consume them all.

The Deception of the Novelist revolves around Justin’s character as a famous novelist who receives a large inheritance after his father’s passing. He rents out one of his inherited properties to a Japanese/Chinese woman named Elaine and they embark on an affair, causing rifts in his marriage with Jeanna Ho. One night, Elaine is suddenly found dead in the balcony of the house. When police start their investigation, they realize that there are a lot of suspicious factors to the case leading them to suspect that this is not their normal kidnapping or revenge against an unfaithful husband case.

In this classic whodunit, a police detective must rely on the only witness - a parrot, to catch the killer of an armed robber.

Bumbling private detective Chan Tam is enlisted by police pal Fung Chak to help in the investigation of a serial murder case. The victims a middle-aged man killed at home, a dead woman found in the trash dump, and a teenage girl slain in the park were all killed in grisly manners, but they didn't seem related to one another. With no clue to follow up on, Tam is decidedly at his wits' end.

Cops and Robbers depicts a city where ordinary citizens hold little trust for the police; far removed from the post-ICAC Hong Kong of today.

Hassan is a Hong Kong-born Pakistani kid waiting for refugee status to Canada. His father died in a car accident that Yat is involved in, who himself was a refugee from China in the 1970s. When Hassan joins a refugees' gang and gets entangled with the police, Yat decides to help him flee, but Hassan finds out the truth about his father's death. Can their journey continue?

It is July 1st of 1997, and Hong Kong is bright in celebration. The United Kingdom handover of Hong Kong to the People's Republic of China leaves Ga Yin, and his fellow soldiers without work. Which leads them to find employment and money any way they can get it. Without much success, Ga Yin decides to join his brother Ga Suen in the triad gang world.

A Hong Kong-set mystery centered on a detective who has been framed for a series of gruesome murders.

During an investigation into a mass murder with links to a doomsday cult, Officer Chan (Louis Koo) reluctantly enlists police occult expert Officer Chiu (Anthony Wong Chau-Sang) to help him solve the case. But during their investigation of the cult and its charismatic leader The Pope (Hoi Lin), they realize the killings may be related to a previous serial murder case, their own pasts, and the psychotic hypnotists in charge of it all may be preaching some truth...

When Cheng Kam-Fu (Lawrence Ng) reports his wife missing to the police, Detective Lau (Anthony Wong) suspects there’s more to the disappearance than meets the eye. While his colleagues remain uninterested, Lau begins round the clock observation on Fu’s shop/flat, paying particular attention to his mistress, Lo (Li Yu).

Lin Yi and her boyfriend Sun Wei is in full swing developing underground affair but this time, the police suddenly came to the home of Lin Yi Sun Wei told he had died a long time; Chen lived on the floor every night lights appear the same frequency, but with her ​​every night lights conversation boys and another girl seemed to have a secret can not be said; Liu Yihao often saw the woman on the floor, screaming for help, but when he informed the police to rescue them when they surprisingly found that the room was empty ...... all of this What is hidden behind a secret? They encounter bizarre experience, even under threat of death, for they reveal the truth at all costs.

Two mismatched Hong Kong police detectives, Yau and Yue, were assigned to work undercover as a live-in couple to track down a serial killer accused of murdering adulterers. In the meantime, Yau (Anthony Chan) is coping with his girlfriend having left him, and Yue (Sandra Ng) is losing her boyfriend to a college girlfriend of his.

CID detective Rockman was sent to Thailand to investigate a case involving the Hong Kong and Thai underground syndicate. During his visit he met a sexy table dancer called Elli, they had a brief but hot steamy affair. Unexpectedly Rockman was ordered to return to Hong Kong. Before leaving he promised Elli he would return. But he never did. Heart broken Elli felt she was deceived. Rockman never expect his affair would bring the worst luck for him and family. Three years later in Hong Kong, when Rockman was busily investigating a murder case one stormy night, a senior policeman was murdered by a most wanted fugitive Lam Chiu. On the other hand, Rockman's wife broke down after their son died mysteriously. All the major newspapers headlined the two cases, saying the murder and the baby's death are related. Frustrated Rockman worked closely with Brother Sum well seasoned detective...