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.

Cast

Cynthia Khan

Insp Rachel Yeung Lai-Ching

Donnie Yen

Captain Donnie Yan

Michael Wong

Captain Michael Wong

Yuen Yat-Choh

Luk Wan-Ting

Lisa Chiao Chiao

Luk's Mother

Wai Gei-Shun

HK Police Officer

Yuen Shun-Yi

Drug Dealer

Michael Woods

Black Fighter on Rooftop / Motorbike