Okay, fellow tapeheads, let's rewind to that glorious late-80s feeling. You're scanning the shelves at the local video store, past the glossy Hollywood blockbusters, and your eyes land on something different. Maybe the cover art is a bit chaotic, maybe the title sounds generic but promises action – In the Line of Duty 4. You take a chance, pop it in the VCR later that night, adjust the tracking just so, and BAM! You're hit with a raw, kinetic energy that feels worlds away from the polished action coming out of the States. That, my friends, is the magic of Hong Kong action cinema hitting its stride, and this 1989 entry is a prime example.

This isn't a direct sequel in the narrative sense to the earlier In the Line of Duty films (which famously kicked off with Michelle Yeoh in Yes, Madam!), but it carries the torch for hard-hitting female-led police actioners. Stepping into the formidable lead role is Cynthia Khan (real name Yang Li-Tsing, chosen for its similarity to Michelle Yeoh's then-name, Michelle Khan), playing Inspector Yeung Lai-Ching. She absolutely holds her own, bringing a determined grit and impressive physicality to the part. The plot? Pure 80s gold: smuggled goods, a murdered dockworker, a crucial witness caught in the middle (played with surprising vulnerability by Yuen Yat-chor), corrupt cops, and the CIA poking around Hong Kong. It’s the kind of delightfully convoluted setup designed purely to string together increasingly insane action sequences.
But let's be honest, the real story here involves the electrifying presence of a young, pre-superstardom Donnie Yen. Playing Captain Donnie Yan (yes, really), a stoic Hong Kong detective initially at odds with Inspector Yeung, Yen explodes onto the screen. You can already see the unique blend of power, speed, and intricate technique that would later make him a global icon. It's fascinating to see him here, raw and full of fire, working under the legendary Yuen Woo-ping.

And speaking of the director... Yuen Woo-ping! Even before he brought his wire-fu mastery to Hollywood with The Matrix (1999) and Crouching Tiger, Hidden Dragon (2000), "Master Yuen" was orchestrating some of the most breathtaking fight choreography the world had ever seen. In the Line of Duty 4 showcases his genius for staging intricate, bone-crunching encounters in confined spaces and wide-open environments alike. Forget the smooth, often floaty feel of modern CGI-assisted fights; this is pure practical mayhem.
Remember how real those hits looked back then? That's because, well, they often were. Stunt performers in Hong Kong cinema during this era were legendary for their willingness to put their bodies on the line. The film is packed with moments that make you wince – high falls onto unforgiving surfaces, complex exchanges where actors narrowly avoid serious injury, kicks and punches that connect with undeniable force. There’s a rooftop chase sequence here that is simply relentless, showcasing agility and sheer nerve. Yuen Woo-ping knew exactly how to frame this chaos, using dynamic camera angles and sharp editing to maximize the impact without sacrificing clarity.


Rounding out the main trio is Michael Wong as Michael Wong (another inspired character name!), an American cop joining the investigation. Wong became something of a fixture in these HK action films, often playing the slightly bewildered or hot-headed Westerner. His presence adds that classic 80s transnational flavour, even if his character sometimes feels a bit like a plot device to bridge cultures (and trigger more conflict). It’s part of the charm, really – that slightly awkward, earnest attempt to blend Hong Kong action sensibilities with elements aimed at an international market, something D&B Films, the production company, often aimed for. A retro fun fact: D&B Films was quite influential in the 80s, pushing the 'girls-with-guns' subgenre forward with this series and others.
The film itself was part of a wave of HK action that found a massive audience on VHS worldwide, often under different titles (In the Line of Duty IV: Witness or Yes, Madam 4 being common alternatives). While maybe not reaching the critical acclaim of some contemporaries, it delivered exactly what action fans craved: non-stop, inventive, and incredibly well-executed fight scenes. Watching Cynthia Khan seamlessly transition from gunplay to intricate martial arts, or seeing Donnie Yen unleash a flurry of kicks that seem to defy gravity (even before extensive wirework became his hallmark), is pure bliss for fans of the genre. It wasn't trying to be high art; it was trying to blow your socks off with sheer physical prowess, and it succeeded admirably.

In the Line of Duty 4 is a fantastic snapshot of late-80s Hong Kong action filmmaking. It’s fast, furious, and features incredible practical stunt work orchestrated by a master. Cynthia Khan proves a worthy successor in the series lead, and witnessing a young Donnie Yen absolutely dominate the screen is a historical treat. Sure, the plot is functional at best, and some dialogue might induce a nostalgic chuckle, but the action remains genuinely thrilling.
Rating: 8/10 - The rating reflects its excellence within its genre and era. The action choreography and performances by Khan and Yen elevate it significantly, delivering exactly the kind of high-impact entertainment VHS hunters dreamed of finding.
Final Thought: Forget shaky cams and CGI overload; this is action you can feel, crafted with sweat, skill, and a glorious disregard for health and safety regulations. A must-watch for anyone craving that authentic, hard-hitting VHS-era Hong Kong flavour.