Johnnie To returns to the cops-and-criminals thriller after making his greatest comedy and romantic melodrama, Life Without Principle (2011) and Romancing in Thin Air (2012), respectively. It may be a notch below those two masterpieces, but that's a minor complaint; few other working filmmakers display this degree of visual sophistication and old-school craftsmanship. Typically cast as a heroic figure in To's films, Louis Koo plays a busted cartel boss who's desperate to lead the police to the heart of a giant drug operation—if he succeeds, he just might get out of a death sentence. To creates a gorgeous, intricate visual scheme based on the ever-shifting relationships between police, informants, and several crime organizations, conducting the numerous elements like a symphony. In subtitled Mandarin, Cantonese, and sign language.