Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.
Unfortunately the movie Infernal Affairs is not yet available on HBO Max.
| Writing | Felix Chong | Screenplay |
| Production | Andrew Lau Wai-Keung | Producer |
| Directing | Alan Mak | Director |
| Directing | Andrew Lau Wai-Keung | Director |
| Editing | Danny Pang Fat | Editor |
| Camera | Lai Yiu-Fai | Director of Photography |
| Writing | Alan Mak | Screenplay |
| Camera | Andrew Lau Wai-Keung | Director of Photography |
| Production | Ronald Wong | Production Manager |
| Camera | Raymond Lam Fai-Tai | Steadicam Operator |
| Sound | Kwong Wai-Hung | Foley Artist |
| Camera | Cho Man-Keung | Focus Puller |
| Camera | Ho Kin-Kwong | Focus Puller |
| Costume & Make-Up | Cheng Yu-Lai | Makeup Artist |
| Sound | Kinson Tsang King-Cheung | Sound Re-Recording Mixer |
| Crew | Dion Lam Dik-On | Stunt Coordinator |
| Sound | Felix Chung Sze-Ming | Sound Effects Editor |
| Sound | George Lee Yiu-Keung | Dialogue Editor |
| Sound | Kinson Tsang King-Cheung | Sound Designer |
| Lighting | Wong Chi-Ming | Gaffer |
| Sound | George Lee Yiu-Keung | Sound Re-Recording Mixer |
| Costume & Make-Up | Lau Wai-Hing | Hairstylist |
| Visual Effects | Eddy Wong Wang-Hin | Visual Effects Supervisor |
| Camera | Wing Chung Kwan | Focus Puller |
| Editing | Curran Pang | Editor |
| Sound | Felix Chung Sze-Ming | Music Editor |
| Art | Choo Sung-Pong | Art Direction |
| Visual Effects | Victor Wong Wang-Tat | Visual Effects Supervisor |
| Costume & Make-Up | Lee Pik-Kwan | Costume Design |
| Art | Wong Ching Ching | Art Direction |
| Sound | Bernard Chin Wing-Lai | Sound Mixer |
| Sound | Comfort Chan Kwong-Wing | Original Music Composer |
| Production | Ronald Wong | Producer |
