PTU, also known as PTU: Police Tactical Unit, is a 2003 Hong Kong crime thriller film produced and directed by Johnnie To, starring Simon Yam, Maggie Shiu, Lam Suet and Ruby Wong. Plot The film follows a series of encounters of a group of patrolling Police Tactical Unit troopers during one night, which starts off when the patrol-team tries to help a sergeant of the District Anti-Triad Squad of the Hong Kong Police Force, Lo Sa, to retrieve his lost service-issue revolver after he was assaulted by a group of triad members. The films portrays the police officers' use of extra-legal means to achieve the results of investigations and reveals the complex relationships between criminals and police officers, the hostility amongst criminals themselves and even the rivalry among different bureaux within the Hong Kong Police Force. Cast Simon Yam as Police Tactical Unit Sergeant Mike Ho Maggie Shiu as Police Tactical Unit Sergeant Kat Lam Suet as District Anti-Triad Squad Sergeant Lo Sa Ruby Wong as District Crime Squad Inspector Leigh Cheng Raymond Wong Ho-yin as Constable Wong Eddy Ko as Eye Ball Loi Hoi-pang as Bald Head Production According to To, the budget for the film was approximately or about . It was shot entirely at night. While the final shootout sequence of the film takes place in Canton Road, To reportedly said that "if there was a single location where he would have wanted to stage a gunfight battle, it was Cameron Road, but he could not get permission from the police to do it". The sequence was actually shot in Ap Lei Chau. Reception Awards and nominations Cognac Festival du Film Policier Special Jury Prize (Johnnie To) Golden Bauhinia Awards Won: Best Actor (Simon Yam) Won: Best Director (Johnnie To) Won: Best Picture (Johnnie To) Won: Best Screenplay (Yau Nai-Hoi and Au Kin-Yee) Won: Best Supporting Actor (Lam Suet) Golden Horse Film Festival Won: Best Screenplay (Yau Nai-Hoi and Au Kin-Yee) Nominated: Best Actor (Simon Yam) Nominated: Best Cinematography (Cheng Siu-Keung) Nominated: Best Director (Johnnie To) Nominated: Best Editing (Law Wing-cheung) Nominated: Best Costume Design (Sukie Yip) Nominated: Best Original Film Score (Chung Chi Wing) Nominated: Best Picture (Johnnie To) Nominated: Best Sound Effects (Martin Chappell) Nominated: Best Supporting Actor (Lam Suet) Nominated: Best Visual Effects (Stephen Ma) Hong Kong Film Awards Won: Best Director Nominated: Best Actor (Simon Yam) Nominated: Best Cinematography (Cheng Siu-Keung) Nominated: Best