Movies Like In the Line of Duty 4
If you loved In the Line of Duty 4's Action and Crime storytelling, these films deliver a similar experience — carefully selected for tone, themes, and emotional depth. Each pick includes where to watch it right now.
★ Top Picks

P Storm
Liu Yue Ping reports to the ICAC about a rich 2G Cao Yuen Yuen who bribed officers of the Hong Kong Correctional Services (HKCS) from inside the prison. William Luk decides to infiltrate the prison as an inmate to conduct his investigation, while his partner Ching Tak Ming and Chief Inspector Lau Po-keung back him up from the outside.

SPL: Kill Zone
Chan, an articulate senior detective nearing the end of his career, is taking care of the daughter of a witness killed by ruthless crime lord Po. Martial arts expert Ma is set to take over as head of the crime unit, replacing Chan who wants an early retirement.

Project Gutenberg
The Hong Kong police is hunting a counterfeiting gang led by a mastermind code-named "Painter" . The gang possesses exceptional counterfeiting skills which makes it difficult to distinguish the authenticity of its counterfeit currency. The scope of their criminal activities extends globally and greatly attracts the attention of the police. In order to crack the true identity of "Painter", the police recruits a painter named Lee Man to assist in solving the case.

Motorway
Two police pursuit drivers, a hothead rookie and his long-suffering, almost-retired mentor, face off against an escape car driver from the latter's past.

Master Z: Ip Man Legacy
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.

Welcome to the Punch
When notorious criminal Jacob Sternwood is forced to return to London, it gives detective Max Lewinsky one last chance to take down the man he's always been after.

Legacy of Rage
A man is framed for murder by his drug-dealing best friend who covets his girlfriend, leading to eight years in jail and a vow of revenge upon release.

The Enforcer
An undercover cop struggling to provide for his son and ailing wife, must infiltrate a ruthless gang. But things turn sour when another cop blows his cover and he quickly finds himself battling for his life and the lives of his family.
More Movies Like In the Line of Duty 4

City on Fire
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.

The Protector
Billy Wong is a New York City cop whose partner is gunned down during a robbery. Billy and his new partner, Danny Garoni, are working security at a fashion show when a wealthy man's daughter, Laura Shapiro, is kidnapped. The Federal authorities suspect that Laura's father is involved with Mr. Ko, a Hong Kong drug kingpin, so the NYC police commissioner sends the two cops to Hong Kong to investigate.

Tiger Cage
Something fishy is going on in the anti-Drug Trafficking Unit of the HK Police, and only a few honest cops know that the corruption goes all the way to the top. However, they must prove their case quickly, and by unconventional means, after they are framed for murder and drug-trafficking themselves. Dodging bullets from cops and criminals alike, the race is on to clear their names, protect their loved ones, and bring their corrupt colleagues to justice.

Wanted Man
Follows a police officer who must retrieve an eyewitness and escort her after a cartel shooting leaves several DEA agents dead, but then he must decide who to trust when they discover that the attack was executed by American forces.

The International
An interpol agent and an attorney are determined to bring one of the world's most powerful banks to justice. Uncovering money laundering, arms trading, and conspiracy to destabilize world governments, their investigation takes them from Berlin, Milan, New York and Istanbul. Finding themselves in a chase across the globe, their relentless tenacity puts their own lives at risk.

Island of Fire
Someone in a prison run by a corrupt warden fakes the deaths of convicts to later use them as expendable assassins. A police officer is sent into the prison to gather evidence of the corruption.

Art of Eight Limbs
Four canisters of deadly VX nerve gas have fallen into the hands of an international arms dealer in Myanmar. A CIA recruit delivers a high-tech detection device to an agent already on the ground.

The Black Book
After his son is wrongly accused of kidnapping, a deacon who has just lost his wife takes matters into his own hands and fights a crooked police gang to clear him.

The White Storm 3: Heaven or Hell
An undercover cop who invade a drug cartel led by a notorious Thai drug lord. In classic heroic bloodshed fashion, the two develop a bond of brotherhood.

Mechanic: Resurrection
Arthur Bishop thought he had put his murderous past behind him when his most formidable foe kidnaps the love of his life. Now he is forced to travel the globe to complete three impossible assassinations, and do what he does best, make them look like accidents.

Absolution
An aging ex-boxer gangster working as muscle for a Boston crime boss receives an upsetting diagnosis. Despite a faltering memory, he attempts to rectify the sins of his past and reconnect with his estranged children. He is determined to leave a positive legacy for his grandson, but the criminal underworld isn’t done with him and won’t loosen their grip willingly.

Wire Room
New recruit Justin Rosa must monitor arms-smuggling cartel member Eddie Flynn — and keep him alive at all costs. When a SWAT team descends on Flynn’s home, Rosa breaks protocol and contacts the gangster directly to save his life. As gunmen break into the Wire Room and chaos erupts, Mueller and Rosa make a final, desperate stand against the corrupt agents and officials who seek to destroy evidence and kill them both.
Why These Movies Are Similar
These recommendations share core qualities with In the Line of Duty 4 (1989): Action and Crime themes, similar narrative structure, and comparable emotional depth. NoBadPicks uses a combination of TMDB collaborative filtering, genre matching, and AI analysis to surface films most likely to resonate with fans of In the Line of Duty 4.
See full details for In the Line of Duty 4 (1989)