In the Line of Duty 4
1989, Cantonese. Directed by Yuen Woo-ping.
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.
- Runtime
- 1h 34m
- Post-credits
- None listed
- Language
- Cantonese
- Rated
- Check local
Start now and it ends at ….
Worth the Hype
Clear your evening for this.
7.0/10 from 65 TMDB viewer ratings.
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Where to watch In the Line of Duty 4
In the Line of Duty 4 is streaming on Tencent Video in India.
Stream
Tencent VideoAvailability in India as of 14 November 2026. Streaming data by JustWatch.
Part of a series
In the Line of Duty: watch order
Cast & crew
- Yuen Woo-pingDirector
- Cynthia KhanInsp Rachel Yeung Lai-Ching
- Donnie YenCaptain Donnie Yan
- Michael WongCaptain Michael Wong
- Yuen Yat-ChohLuk Wan-Ting
- Lisa Chiao ChiaoLuk's Mother
- Wai Gei-shunHK Police Officer
- Sunny Yuen Shun-YiDrug Dealer
- Michael WoodsBlack Fighter on Rooftop / Motorbike
- John SalvittiFighter in Alley
- Stephan BerwickFighter on Motorbike
- Fairlie Ruth KordickBlonde Fighter
- Paul Wong KwanKiller at Hospital
Details
- Released
- 21 July 1989
- Original title
- 皇家師姐IV直擊證人
- Country
- Hong Kong
- Written by
- Anthony Wong Wing-fai, Cheung Chi-sing, Kim Yip Kwong-kim
Check ratings elsewhere
News & fan talk
Watch before In the Line of Duty 4
In release order. The films it follows, and anything it builds on.
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What comes next in the series.
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In the Line of Duty 4: quick answers
What should I watch before In the Line of Duty 4?
Watch Yes, Madam! (1985), Royal Warriors (1986), and In the Line of Duty 3 (1988) first.
What comes after In the Line of Duty 4?
Next in the series: In the Line of Duty 5: Middle Man (1990), Forbidden Arsenal (1991), and Sea Wolves (1991).
Is In the Line of Duty 4 worth watching?
Our verdict is Worth the Hype: Clear your evening for this. It scores 7.0/10 from 65 TMDB viewer ratings.
How long is In the Line of Duty 4?
In the Line of Duty 4 runs 94 minutes (1h 34m).
Does In the Line of Duty 4 have a post-credits scene?
None is listed for In the Line of Duty 4. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
In the Line of Duty 4 parents guide: is it suitable for kids?
No age rating is listed for In the Line of Duty 4 yet.
Which OTT platform is In the Line of Duty 4 on?
In the Line of Duty 4 is streaming on Tencent Video in India. (Checked 14 November 2026.)
What movies are like In the Line of Duty 4?
If you liked In the Line of Duty 4, try In the Blood, Dog Bite Dog, Legendary Assassin.
Who directed In the Line of Duty 4?
In the Line of Duty 4 (1989) was directed by Yuen Woo-ping and stars Cynthia Khan, Donnie Yen, Michael Wong.