Line Walker2016-1h 48min 6.5 / 10 68The 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.ActionCrimeDramaDirected by Jazz BoonWriters Cat Kwan Ho-MingStars Nick Cheung Ka-Fai Louis Koo Francis Ng Chun-YuWATCH TRAILER