Mad Detective

Sean Lau Ching-Wan Inspector Chan Kwai Bun Andy On Inspector Ho Ka-on Lam Ka-Tung Ko Chi Wai Kelly Lin Hsi-Lei May Cheung Lee Kwok-Lun Wong Kwok Chu Karen Lee Choi-Ling Gigi Flora Chan May Cheung in Bun's Eyes Eddie Cheung Violent Man - Ko's Inner Personality Lam Suet Fatso - Ko's Inner Personality Jay Lau Calculating Woman - Ko's Inner Personality Eddy Ko Hung The Chief Jo Kuk Cho-Lam Ho Ka-on's Inner Personality Jonathan Lee Yat-Sing Weak Boy - Ho's Inner Personality Yuen Ling-To Policeman Ronald Yan Mau-Keung Chi-Wai's Boss Johnnie To Director Wai Ka-fai Director Chiu Chi-Shing Unit Manager Raymond Chan Kam-Ho Production Design Martin Richard Chappell Sound Designer Charles Heung Wah-Keung Executive Producer Kuk Kok-Leung Line Producer Wai Ka-fai Screenplay Au Kin-yee Screenplay Johnnie To Producer Wai Ka-fai Producer Cheng Siu-keung Director of Photography Raymond Chan Kam-Ho Art Direction Stanley Cheung Sai-Kit Costume Design Midco Chu Wai-Fong Makeup Artist