In the Line of Duty 4
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.
Where to watch In the Line of Duty 4 in United States
fuboTVClick a service to open In the Line of Duty 4 there. Availability last verified on June 20, 2026.
Where is In the Line of Duty 4 streaming around the world?
| Country | Streaming on | Rent / Buy |
|---|---|---|
| United States | fuboTV | — |
| France | — | Google Play Movies, YouTube |
| Spain | fuboTV | — |
| Japan | — | Amazon Video |
| South Korea | Watcha, TVING | — |
About In the Line of Duty 4
In the Line of Duty 4 is a 1989 cn-language action, crime and thriller film directed by Yuen Woo-ping. The cast is led by Cynthia Khan, Donnie Yen, Michael Wong. It has a runtime of 1h 34m. Viewers rate it 7.0/10 across 100 ratings. In United States, it is currently streaming on fuboTV.
In the Line of Duty 4 was produced by D & B Films and made in Hong Kong. It was released on July 21, 1989, and carries a 18 certification.
- Director
- Yuen Woo-ping
- Writers
- Anthony Wong Wing-Fai, Cheung Chi-Sing, Kim Yip Kwong-Kim
- Release date
- July 21, 1989
- Original language
- cn
- Age rating
- 18
- Status
- Released
- Country
- Hong Kong
- Production
- D & B Films
In the Line of Duty 4 cast & crew
In the Line of Duty 4 was directed by Yuen Woo-ping and written by Anthony Wong Wing-Fai, Cheung Chi-Sing, and Kim Yip Kwong-Kim.
The cast features Cynthia Khan as Insp Rachel Yeung Lai-Ching, Donnie Yen as Captain Donnie Yan, Michael Wong as Captain Michael Wong, Yuen Yat-Choh as Luk Wan-Ting, Lisa Chiao Chiao as Luk's Mother, and Wai Gei-Shun as HK Police Officer.
Behind the camera, the score was composed by Richard Yuen, cinematography is by Au Kam-Hung, and it was produced by Stephen Shin Kei-Yin and Dickson Poon Dik-Sang.
Is In the Line of Duty 4 worth watching?
In the Line of Duty 4 holds an audience score of 7.0/10 from 61 ratings, marking it as well-reviewed action films.
At 1h 34m, it's an easy, time-light watch.
If you enjoy action, crime, and thriller, In the Line of Duty 4 is worth a place on your watchlist.
How and where to watch In the Line of Duty 4
In United States, you can stream In the Line of Duty 4 on fuboTV. Click any service above to open it directly.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of In the Line of Duty 4
Cynthia Khan
Insp Rachel Yeung Lai-Ching
Donnie Yen
Captain Donnie Yan
Michael Wong
Captain Michael Wong
Yuen Yat-Choh
Luk Wan-Ting
Lisa Chiao Chiao
Luk's Mother
Wai Gei-Shun
HK Police Officer
Yuen Shun-Yi
Drug Dealer
Michael Woods
Black Fighter on Rooftop / Motorbike
John Salvitti
Fighter in Alley
Stephan Berwick
Fighter on Motorbike
Fairlie Ruth Kordick
Blonde Fighter
Paul Wong Kwan
Killer at Hospital
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In the Line of Duty 4 — FAQs
▸Where can I watch In the Line of Duty 4 in United States?
In the Line of Duty 4 is streaming on fuboTV in United States.
▸Is In the Line of Duty 4 on fuboTV?
Yes — In the Line of Duty 4 is currently available on fuboTV in United States.
▸What language is In the Line of Duty 4 in?
In the Line of Duty 4 is originally in cn. Subtitle and dub options vary by streaming service.
▸How long is In the Line of Duty 4?
In the Line of Duty 4 runs 1 hours 34 minutes (94 minutes).
▸What is In the Line of Duty 4 rated?
In the Line of Duty 4 is rated 18. It holds a 7.0/10 audience score from 61 ratings.
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