

The story revolves around three members of a police surveillance squad conducting an investigation into a financial investment group involved in criminal fraud. The focus of the plot, however, is actually on the three officers themselves who stumble upon an opportunity to capitalize on information they gathered during their surveillance.
Acting
Lau Ching-wan's slow-burn descent into desperation.
Direction
Mak and Chong turn wiretaps into psychological warfare.
Editing
Tight surveillance montages that suffocate with information overload.

Director
Felix Chong Man-Keung
Trivia, insights & behind the scenes
Mak and Chong wrote Infernal Affairs; this is their lesser-known masterpiece about institutional rot from within.
Released post-2008 financial crisis, it captures Hong Kong's anxiety about unchecked speculation and collapsing trust in systems.