Cross (2012 film)

Cross is a 2012 Hong Kong horror thriller film written and directed by Daniel Chan, Steve Woo, Lau Kinping, Hui Shuing and starring Simon Yam, Kenny Wong, Liu Kaichi and Nick Cheung. The film revolves around a Catholic serial killer played by Yam, whom after witnesses his wifes death, believes he is given to duty to kill suicidal people to bring them peace and allowing them to enter heaven.

Source: Wikipedia