Yan is een undercover-agent bij de triades, de Hongkongse maffia. Na tien jaar hard werken zit hij diep in de machtigste bende van Hong Kong. Ming is een criminele infiltrant in de politie, die daar op zijn achttiende werd geplaatst.
Nee, helaas is Infernal Affairs nog niet beschikbaar op Netflix in Nederland.
| Directing | 麥兆輝 | Director |
| Writing | 莊文強 | Screenplay |
| Directing | 劉偉強 | Director |
| Production | 劉偉強 | Producer |
| Writing | 麥兆輝 | Screenplay |
| Camera | 黎耀辉 | Director of Photography |
| Editing | 彭發 | Editor |
| Camera | 劉偉強 | Director of Photography |
| Production | 黃斌 | Production Manager |
| Editing | 彭正熙 | Editor |
| Art | 趙崇邦 | Art Direction |
| Art | Wong Ching Ching | Art Direction |
| Costume & Make-Up | 利碧君 | Costume Design |
| Costume & Make-Up | Cheng Yu-Lai | Makeup Artist |
| Costume & Make-Up | 劉偉慶 | Hairstylist |
| Visual Effects | 黃宏達 | Visual Effects Supervisor |
| Visual Effects | 黃宏顯 | Visual Effects Supervisor |
| Crew | 林迪安 | Stunt Coordinator |
| Sound | 錢永勵 | Sound Mixer |
| Sound | Felix Chung Sze-Ming | Music Editor |
| Sound | Felix Chung Sze-Ming | Sound Effects Editor |
| Sound | 鄺偉雄 | Foley Artist |
| Sound | George Lee Yiu-Keung | Dialogue Editor |
| Sound | George Lee Yiu-Keung | Sound Re-Recording Mixer |
| Sound | 曾景祥 | Sound Re-Recording Mixer |
| Sound | 曾景祥 | Sound Designer |
| Camera | 曹萬強 | Focus Puller |
| Camera | Ho Kin-Kwong | Focus Puller |
| Camera | Raymond Lam Fai-Tai | Steadicam Operator |
| Lighting | 黃志明 | Gaffer |
| Sound | 陳光榮 | Original Music Composer |
| Production | 黃斌 | Producer |
| Production | Shi Nansun | Producer |
