- HD 1080
- Runtime: 100m.
- Status: Released
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- Languages: cn
- Country: Hong Kong
- Director: Cha Chuen-Yee
- Stars: Cynthia Khan, David Wu, Alvina Kong Yan-Yin, Lo Lieh, Kim Maree Penn
- Production_studio: D & B Films
- The In the Line of Duty 5: Middle Man is featured in the top rankings of 1990
- #53 in Top Action Movies of 1990
When he is framed for being a spy because of his friend's illegal activities, David must escape from police, CIA, and assassins with the help of his cousin.