Thou Shalt Not Swear Two undercover cops are forced to be a team to find a serial killer. Chow is straight-laced and Lau has ESP. The victims were all childhood friends. The killer is a ghost! Details Casts Posters Title Thou Shalt Not Swear Release Date 1993-09-03 Runtime 01 Hours 31 Minutes Genres Comedy Horror Production Companies Try Ease Ltd, P U Production Ltd Production Countries Hong Kong Michael Chow Man-Kin... Inspector Chow / Narrator... Lau Ching-wan... Inspector Lau... Jennifer Chan Ming-Chan... Chia Yi... Ronald Wong Ban... ... Helena Law Lan... ... Kingdom Yuen... ... Eva Lai Yin-San... ... Michael Tao Tai-Yu... ... Cheung Kwok-Keung... ... Isabel Leung... ... Cha Chuen-Yee... ... Tats Lau Yee-Tat... ... Rico Chung Kai-Cheong... ... Sze-Ma Wah-Lung... ... Andrew Yu... ... Amy Wong... ... Cub Chin Kong-Hon... ... Yip San... ... John Wakefield... ... Wan Wai-Chi... ... Brenda Chan Kwai-Fan... ... Sabrina Ho Pui-Yi... ... Original Size (500x750) Original Size (500x750) Original Size (500x750) Original Size (500x750)