- HD 1080
- Runtime: 119m.
- Status: Released
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- Languages: cn
- Country: China, Hong Kong, Singapore
- Director: Andrew Lau Wai-Keung, Alan Mak
- Stars: Edison Chen, Shawn Yue Man-Lok, Eric Tsang Chi-Wai, Anthony Wong Chau-Sang, Francis Ng Chun-Yu
- keywords: police, undercover, gangster, chinese mafia, triade, murder
- Production_studio: Media Asia, MediaCorp Raintree Pictures, Eastern Dragon Film Co., Basic Pictures
- Slogan: The Birth of a Legend.
- providers: Max, Max Amazon Channel, Criterion Channel
- The Infernal Affairs II is featured in the top rankings of 2003
- #12 in Top Action Movies of 2003
- #10 in Top Crime Movies of 2003
- #9 in Top Thriller Movies of 2003
In this prequel to the original, a bloody power struggle among the Triads coincides with the 1997 handover of Hong Kong, setting up the events of the first film.
