The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals.
Jazz BoonDirector
Blue
Shiu Chi-Long
Q-Sir / Inspector Q
Ding Siu-Ka
Foon Hei-Gor
Police Superintendent
Triad Member
Assassin
Tung Pak-Ho
Siu Ying, Blue's Bodyguard
Sniper
Kwok Ming
Ferrari Owner
Lam Tung Yau
Karina
Hong Sir
Samantha, CIB Detective
CIB Detective
Shiu Chi-Long's Subordinate
Ng Pak
Lam Bok-Man's Bodyguard
Auntie Mui
Cocktail MC
Assassin in Sauna
Mandy
Banker
Restaurant Manager
Peter, IT Manager
Bank Client
Ma Sir
Interrogation Room Policeman
Shiu Chi-Long's Thug
Chum Foon Hei's Thug
CIB
Lam Tung Yau's Bodyguard
Kwok Ming's Thug
Surveillance Room Policeman
Tung Pak-Ho's Thug
Ng Pak's Thug
Police Inspector
Kwong Ming Lawyer
OTCB Officer
Drug Lord
Driver
Ding's Police Guard
Hitman
Part of
Includes: Line Walker 2: Invisible Spy, Line Walker
