In the Line of Duty (film series)

In the Line of Duty (traditional Chinese: 皇家師姐; simplified Chinese: 皇家师姐; Jyutping: Wong⁴ gaa¹ si¹ ze²) 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.

Due to the entries being thematically rather than narratively related and their varying titles and release order in different territories and formats, what is considered part of the series and which number of it is open to debate. One wide interpretation is, in order of original release:

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