Wilson Yip directed SPL: Sha Po Lang (also known as Kill Zone in the United States), a 2005 Hong Kong action film written with Szeto Kam-Yuen and Ng Wai-lun. Donnie Yen, Sammo Hung, and Simon Yam feature in the film. On November 18, 2005, the film was released.
Yam plays a cancer-stricken police detective on the verge of retirement who turns to criminal means to apprehend a deadly triad boss.
Sha Po Lang is a Chinese astrology term that refers to three words that each signify a separate star capable of good or evil depending on its position in the heavens.
SPL, also known as Saat Po Long/Sha Po Lang or Kill Zone, is the best Hong Kong action film in years, starring Donnie Yen, Sammo Hung, and Simon Yam, and including some genuinely savage I'm-not-showing-off-I-really-want-to-kill-you battle scenes. With three other detectives from varied backgrounds, a successful serious crime investigation police squad, led by articulate senior detective Chan (Simon Yam), combat crime. Ma (Donnie Yen), a martial arts master, is scheduled to take over as the unit's leader, replacing Chan, who wants to retire early. Ma is adamant about making things right. Po (Sammo Hung), an up-and-coming underworld figure with a wide range of criminal interests, and Jack (Jing Wu), Po's right-hand man, is a reclusive cold-blooded killer.
Donnie Yen as Inspector Ma Kwun Simon Yam as Inspector Chan Kwok-chung Sammo Hung as Wong Po Wu Jing as Jack Liu Kai-chi as Inspector Lo Kwun-wah Danny Summer as Inspector Kwok Tze-sum Ken Chang as Inspector Lee Wai-lok Austin Wai as Cheung Chun-fei Timmy Hung as Drug Trafficker Chan Tat-chee as Uncle Ba