Line Walker
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.
Nick Cheung Ka-Fai
Blue
Louis Koo
Shiu Chi-Long
Francis Ng Chun-Yu
Q-Sir / Inspector Q
Charmaine Sheh Sze-Man
Ding Siu-Ka
Benz Hui Siu-Hung
Foon Hei-Gor
Moses Chan
Police Superintendent
Louis Cheung
Triad Member
Clara Lee
Assassin
Li Guangjie
Tung Pak-Ho
Zhang Huiwen
Siu Ying, Blue's Bodyguard
Xing Yu
Sniper
Cheng Taishen
Kwok Ming
Lo Hoi-Pang
Triad Member
Bob Lam Shing-Ban
Ferrari Owner
Timothy Cheng Chi-Sing
Lam Tung Yau
Jade Leung Tsang
Karina
Jimmy Au Shui-Wai
Hong Sir
Rebecca Zhu
Samantha, CIB Detective
Stefan Wong
CIB Detective
Grace Wong
CIB Detective
Hugo Wong
Shiu Chi-Long's Subordinate
Océane Zhu
CIB Detective
William Chak
Ng Pak
Sammi Cheung
CIB Detective
Choi Kwok-Hing
Triad Member
Ken Law Ho-Ming
Lam Bok-Man's Bodyguard
Jerry Leung Ho-Kai
Lam Bok-Man's Bodyguard
Ben Yuen Foo-Wah
Triad Member
Alice Fung So-Bor
Auntie Mui
Michael Wai Chi-Ho
Cocktail MC
Cheung Lap-Fung
Assassin in Sauna
Keira Wang
Mandy
Fung Hong-Ling
Banker
Leo Lai Yat-Nam
Restaurant Manager
Kevin Tong
Peter, IT Manager
Carlos Koo
Bank Client
Benjamin Wong Chi-Kong
Ma Sir
Vernon Fong
Interrogation Room Policeman
Ho Chun-Hin
Interrogation Room Policeman
Xavier Leung Kwok-Kin
Shiu Chi-Long's Thug
Sunny Chow
Chum Foon Hei's Thug
Kwing Lam Ka-Wing
Chum Foon Hei's Thug
Lau Tin-Lung
CIB
Terrence Huang
CIB
Penny Chan Kwok-Fung
CIB
Yu Miao
CIB
Dickson Wong Tak-Sang
CIB
Jones Lee Chung Hei
Triad Member
Alex To Kong
Triad Member
Julius Brian Siswojo
Triad Member
Phat Chan
Triad Member
Edward Chui Wai-Tung
Triad Member
Andy Wong Chi-Man
Lam Tung Yau's Bodyguard
Che Kim-Fai
Lam Tung Yau's Bodyguard
Jason Wong
Kwok Ming's Thug
Jacky Lei
Kwok Ming's Thug
Ronald Lam Tsz-Kit
Surveillance Room Policeman
Derek Lam Ling-Yuen
Tung Pak-Ho's Thug
Woo Man-Jun
Tung Pak-Ho's Thug
Emil Chan Cheuk-Wah
Ng Pak's Thug
Jordon Ho Kwok-Nam
Police Inspector
David Yu Tat-Chi
Police Inspector
Mark Lam Wing-Chung
Police Inspector
Chan Ying-Kit
Police Inspector
Akai Lee
Kwong Ming Lawyer
Cheung Wing-Kai
OTCB Officer
Ng Chi-Wai
OTCB Officer
Kwong Yuk-Chung
OTCB Officer
Law Yim-Cheong
OTCB Officer
Jorge Lucas
Drug Lord
Aires Jorge Ramos
Driver
Yiu Man-Kei
Ding's Police Guard
Tommy Leung Pok-Yan
Ding's Police Guard
Wong Wai-Tong
Hitman
Kong Fu-Keung
Hitman
Cheung Ping-Chuen
Hitman
Paco Yick Tin-Hung
Hitman
Kris Li Chun-Pan
MJ Chan