On the shelf
Line Walker
2016Age guide: 15+
Where to watch
- United StatesAsianCrush · Filmzie · Darkroom
- CanadaAsianCrush · Filmzie · Cineverse
- BrazilHBO Max
37 more countries
- MexicoAmazon Prime Video · HBO Max
- IndiaNetflix
- JapanNetflix
- Antigua & BarbudaHBO Max
- ArgentinaAmazon Prime Video · MovistarTV · HBO Max
- BahamasHBO Max
- BarbadosHBO Max
- BelizeAmazon Prime Video · HBO Max
- BoliviaAmazon Prime Video · HBO Max
- ChileAmazon Prime Video · HBO Max · MovistarTV
- ColombiaAmazon Prime Video · HBO Max · MovistarTV
- Costa RicaAmazon Prime Video · HBO Max
- Dominican RepublicAmazon Prime Video · HBO Max
- EcuadorAmazon Prime Video · MovistarTV · HBO Max
- El SalvadorAmazon Prime Video · HBO Max
- GuatemalaAmazon Prime Video · HBO Max
- GuyanaHBO Max
- HondurasAmazon Prime Video · HBO Max
- Hong KongNetflix · Disney Plus · Viu
- IndonesiaNetflix
- JamaicaHBO Max
- MalaysiaNetflix
- NicaraguaAmazon Prime Video · HBO Max
- PakistanNetflix
- PanamaAmazon Prime Video · HBO Max
- ParaguayAmazon Prime Video · HBO Max
- PeruAmazon Prime Video · HBO Max
- PhilippinesNetflix
- SingaporeNetflix
- South Koreawavve
- St. LuciaHBO Max
- TaiwanNetflix · Disney Plus
- ThailandNetflix
- Trinidad & TobagoHBO Max
- Turks & Caicos IslandsHBO Max
- UruguayAmazon Prime Video · HBO Max
- VenezuelaAmazon Prime Video · HBO Max
Checked 11 Nov 2026 · Data: JustWatch
See it on the shelfThe 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.
★ 6.4/10 · 80 TMDB audience ratings
Starring
Nick Cheung Ka-faiBlue
Louis KooShiu Chi-Long
Francis Ng Chun-yuQ-Sir / Inspector Q
Charmaine Sheh Sze-manDing Siu-Ka
Benz Hui Siu-hungFoon Hei-Gor
Moses Chan HoPolice Superintendent
Louis CheungTriad Member
Clara Lee Sung-minAssassin
