overview : 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.

First Air Date : Aug 25, 2014

Last Air Date : Dec 01, 2020

Runtime : 42m

Episodes : 98

Seasons : 3

Genre : Crime,

Companies : TVB

Countries : HK

Keywords : police operation, undercover cop, police officer, triad, undercover operation