- HD 1080
- Runtime: 42m.
- Status: Ended
0
- Languages: cn
- Country: Hong Kong
- Stars: Raymond Lam Fung, Ma Kwok-Ming, Benz Hui Shiu-Hung, Michael Miu Kiu-Wai, Benjamin Yuen Wai-Ho
- keywords: police operation, undercover cop, police officer, triad, undercover operation
- Production_studio: TVB
- Seasons: 3
- Episodes: 98
- First air date: 2014-08-25
- Last air date: 2020-12-01
- The Line Walker is featured in the top rankings of 2014
- #26 in Top Crime Series of 2014
Chief inspector of Hong Kong’s Criminal Intelligence Bureau, Cheuk Hoi, is suspicious of his close colleague’s mysterious death. Adding to the enigma, he discovers that the five undercover agents who were in constant contact with his dead friend have all vanished.