Mad Detective

Mad Detective Chinese is a 2007 Hong Kong psychological thriller film produced and directed by Johnnie To and Wai KaFai. Mad Detective was first screened at the 64th Venice International Film Festival, and later premiered at the 2007 Toronto International Film Festival, before being released in Hong Kong onNovember 2007. The films screenplay won Best Screenplay awards at various Asian film ceremonies.

Years later, Inspector Ho KaOn Andy On is investigating the case of Wong KwokChu Lee KwokLun, a colleague who went missing when he and his partner, Ko ChiWai Lam KaTung, were in pursuit of a suspect. Wong has been AWOL formonths, and his gun has been used in a series of armed robberies. Ho turns to Bun, who now lives in seclusion with his imaginary wife, May Cheung Kelly Lin.Bun comes out of retirement and discovers that rather than being one man, ChiWai is a sevenspirit collective, with each perhaps representing an aspect of the seven deadly sins with the head, or brain, being a businesslike woman. He also discovers that ChiWai had his gun stolen by an Indian, named Naresh Sherma, so he killed Wong to steal his gun. ........

Source: Wikipedia