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Eight years undercover and he still can't clock out—betrayal is a full-time job.
TMDB
65
IMDb
65
Rotten Tomatoes
51
Audience Score
51
Google
80

On the Edge (2006)

gritty Hong Kong noirparanoid cat-and-mouseloyalty tests

Overview

ActionDramaThrillerCrime

After working as an undercover in a triad for 8 years, Sheng finally arrests the triad leader and resumes his duties as a police officer. However, life does not return to normal as he is faced with suspicions colleagues and even trailed by the investigations team. One day, he meets some triad members whom he has earlier befriended as an undercover agent and is forced into a corner when asked to collaborate with them once again.

Flag of HKHKCantonese
Content warning
identity erasureinstitutional distrustcosts of deceptionchosen family vs blood

Standout Aspects

Acting

Nick Cheung's twitchy, trapped-animal energy

Direction

Herman Yau's lean, mean 88-minute chokehold

Best for:Solo: Late night when you want to feel watched back·Friends: With someone who argues about Infernal Affairs
Heads up:Violence: Sudden brutal beatings, triad torture sequences
Herman Yau

Director

Herman Yau

ReleasedAug 31, 2006
Runtime1h 28m
StatusReleased

Vibe

Pacefast
Intensityhigh
Tonedark
Feelheavy
Local Production
寰宇娱乐有限公司

Top Cast

Nick Cheung Ka-Fai

Nick Cheung Ka-Fai

Harry Sin

Francis Ng Chun-Yu

Francis Ng Chun-Yu

Don Dark

Anthony Wong Chau-Sang

Anthony Wong Chau-Sang

Lung

Rain Lee Choi-Wah

Rain Lee Choi-Wah

Cat

Derek Tsang Kwok-Cheung

Derek Tsang Kwok-Cheung

Mini B

Calvin Poon Yuen-Leung

Calvin Poon Yuen-Leung

Jimmy

Lester Chan Chit-Man

Lester Chan Chit-Man

Mr. Cheung (as Lester Chan)

Chik King-Man

Chik King-Man

Amy

Pauline Yam Bo-Lam

Pauline Yam Bo-Lam

Madam Ho

Raymond Tsang Chau-Ming

Raymond Tsang Chau-Ming

Sam

Frankie Chan Chi-Leung

Frankie Chan Chi-Leung

Hon

Ask about On the Edge

Opens AI chat

Deep Dive

Trivia, insights & behind the scenes

Cultural

Part of Hong Kong's post-Handover identity crisis cinema—undercover films exploded as metaphors for divided loyalties to mainland China.

Trivia

Herman Yau shot this between his infamous Category III horrors and New Police Story, bringing exploitation urgency to mainstream crime.

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