
Franchise timeline
In the Line of Duty is a series of girls with guns feature films produced by Hong Kong movie studio D & B Films which star, in the first two, Michelle Yeoh and, in subsequent instalments, Cynthia Khan as a police officer who combines use of firearms with martial arts. The third was the first to use the In the Line of Duty title, retroactively applied to the two Michelle Yeoh vehicles.
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Part 1 · Nov 30, 1985
Yes, Madam!
Two unlucky thieves break into a just murdered man's hotel room and steal his passport, with a hidden microfilm, wanted by a triad boss. Two ass-kicking women cops—one Chinese, one British—are on the case.

Part 2 · Jun 26, 1986
Royal Warriors
When a tough policewoman learns about a group of violent terrorists, she, along with her partner and a Japanese detective, does everything it takes to take them down.

Part 3 · Sep 28, 1988
In the Line of Duty 3
Genji Nakamura and his partner Michiko Nishiwaki are thieves for the notorious Red Army terrorist organization in Japan. After pulling off the jewelry heist of the century in which dozens of people get killed, they are now planning to use the jewelry they've snatched to buy an arms cache.

Part 4 · Jul 21, 1989
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.