Movie · 2002 · Drama, Action, Thriller, Crime, Mystery · 1h 41m · R · CN
Curator score: 8.4/10 (241.4K ratings)
Loyalty. Honor. Betrayal.
Overview
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.
Ratings
Curator score: 8.4/10
IMDb: 8.0/10
Letterboxd: 4.04/5
Rotten Tomatoes: 94%
Metacritic: 75
TMDB: 7.8/10
Director
Alan Mak Siu-Fai, Andrew Lau Wai-Keung
Production
Media Asia Films, Basic Pictures
Cast
Andy Lau, Tony Leung Chiu-wai, Anthony Wong Chau-Sang, Eric Tsang Chi-Wai, Kelly Chen Hui-Lin, Sammi Cheng Sau-Man, Elva Hsiao, Chapman To Man-Chat, Gordon Lam Ka-Tung, Shawn Yue Man-Lok, Edison Chen, Berg Ng Ting-Yip, Wan Chi-Keung, Dion Lam, Tony Ho, Courtney Wu, Hui Kam Fung, Chaucharew Wichai, Au Hin-Wai, Lee Tin-Cheung
Where to watch
Max
Curator Review
Verdict
A taut, stylish undercover-cop thriller with a razor-clean premise, strong performances, and real emotional tension beneath the cat-and-mouse mechanics. It’s one of the defining modern Hong Kong crime films: compact, tense, and built on identity, loyalty, and the cost of living a lie.
Best for
fans of tightly plotted crime thrillers
viewers who like moral ambiguity and double lives
people interested in Hong Kong action-cinema craftsmanship
audiences who enjoy tense procedural cat-and-mouse stories
Skip if
you want a slow, contemplative character study
you dislike subtitles or fast-moving plot mechanics
you prefer action over suspense and psychological pressure
you’ve already seen and only want a very different experience from The Departed
Overview
Infernal Affairs is a model of efficient suspense: two men on opposite sides of the law, each trapped inside the identity he’s pretending to live. The setup is simple, but the film keeps tightening the screws until every phone call, meeting, and glance feels loaded with danger.
Worth noting
What makes it endure is the symmetry. It’s not just about a cop in the triads and a triad in the police; it’s about the psychological damage of prolonged deception, and the loneliness that comes with having no stable self to return to. The movie finds tragedy inside a very commercial thriller engine.
Bottom line
The filmmaking is crisp and muscular, with a strong sense of rhythm and a memorable urban noir atmosphere. Even when you know the broad shape of the story, the execution keeps it gripping, and the performances give the whole thing an aching human core.
Top Letterboxd reviews
Patrick Willems (4★) · 2325 likes
After watching this movie and giving it a great deal of consideration I do not think the life of an undercover cop is for me
Melody (4★) · 1215 likes
I was thrilled when Scorsese decided to make The Departed, but I am disappointed the only discussion on this film seems to be whether it is superior/inferior to its Hollywood 'remake'. To me the two are vastly different and culturally specific, the only things in common are the skeleton of the plot, and that they are great films.
The original film title 無間道 (literally 'boundless way') came from the idea of Avici (https://en.wikipedia.org/wiki/Avici) in Buddhism, the lowest level of hell… more
Christina (4★) · 721 likes
*tony leung falling in love with his psychiatrist*
martin scorsese when rewriting this movie: 🥸 cute but let’s have leonardo dicaprio berate the broad and threaten to shoot himself in front of her instead
YI JIAN (4.5★) · 657 likes
The moment when Eric Tsang smashed Tony Leung's hand cast on a table, I knew instantly that this is a film that I will adore for.. well, forever is a strong word, but it's definitely a long, long time.
Powerful performances by the entire cast including the two mentioned above and of course, the great Andy Lau. An exciting ride that tells a genuinely good and original story. Awesome soundtrack. Cheesy death scenes. No CGI rats. Hong Kong crime thrillers are invincible.
Noir-vember Film #16
Nea Ching(y) (4★) · 459 likes
“that was so cool but you know what would really make this sing? Boston accents”