Split Second(2004)

Split Second is a Hong Kong crime thriller that unfolds over thirty tense days. When an April Fools' Day rumour surfaces about a planned assassination of the incoming Police Commissioner, three detectives from different branches—Fung Chi Wai from Criminal Investigation, Wong Ka Fai from the CIB, and undercover operative Yeung Kai Dong—become unexpectedly entangled in the conspiracy. As the city's most powerful triad organization moves in the shadows, the three men must navigate conflicting loyalties and hidden agendas to prevent catastrophe. The film weaves together their separate investigations into a high-stakes race against time, blending procedural tension with the moral ambiguity that defines Hong Kong's best crime cinema.