A tough cop (Nick Cheung), with a knack for developing useful informants and a propensity for treating them as means to an end, finds himself wracked with guilt when a botched bust ends badly for one of his stoolies. When tasked with breaking a jewel-theft ring, he's got no choice but to recruit a street-racing ex-con (Nicholas Tse) as his inside man, but his lingering doubts might jeopardize the mission and all involved. Gritty crime tale co-stars Lunmei Kwai, Kai Chi Lu. 113 min. Widescreen (Enhanced); Soundtracks: Cantonese DTS-HD 5.1, English DTS-HD stereo; Subtitles: English; featurettes; deleted scenes; theatrical trailer. In Cantonese with English subtitles/Dubbed in English.