In the Line of Duty 4

The film follows two detectives entangled in a dangerous drug-trafficking investigation. Their pursuit of justice leads them to confront international organized crime. The plot thickens when an innocent dock worker witnesses a murder and becomes implicated, adding layers of tension and conflict.

Cynthia Khan and Donnie Yen lead the cast, showcasing their martial arts skills amid the gripping narrative. The film combines action and crime genres, appealing to fans of both, particularly those who appreciate martial arts storytelling. As part of the In the Line of Duty Collection, it represents a significant entry for collectors interested in Hong Kong action cinema from the late 1980s.