Season
- Season 3 2020-10-12
- Season 2 2017-09-18
- Season 1 2014-08-25
Episode
- Episode 1: Episode 1
- Episode 2: Episode 2
- Episode 3: Episode 3
- Episode 4: Episode 4
- Episode 5: Episode 5
- Episode 6: Episode 6
- Episode 7: Episode 7
- Episode 8: Episode 8
- Episode 9: Episode 9
- Episode 10: Episode 10
- Episode 11: Episode 11
- Episode 12: Episode 12
- Episode 13: Episode 13
- Episode 14: Episode 14
- Episode 15: Episode 15
- Episode 16: Episode 16
- Episode 17: Episode 17
- Episode 18: Episode 18
- Episode 19: Episode 19
- Episode 20: Episode 20
- Episode 21: Episode 21
- Episode 22: Episode 22
- Episode 23: Episode 23
- Episode 24: Episode 24
- Episode 25: Episode 25
- Episode 26: Episode 26
- Episode 27: Episode 27
- Episode 28: Episode 28
- Episode 29: Episode 29
- Episode 30: Episode 30
- Episode 31: Episode 31
- Episode 32: Episode 32
- Episode 33: Episode 33
- Episode 34: Episode 34
- Episode 35: Episode 35
- Episode 36: Episode 36
- Episode 37: Episode 37
Line Walker
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.
