In the Line of Duty 4(1989)

Original title: 皇家師姐IV直擊證人

• July 21, 1989
• 1 h 34 min
• Action, Crime, Thriller

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.