Watch The Imposter for Free: How to Stream the Movie Online at 123Movies. . With the cast list, you would almost expect this to be another Chang Cheh film. Two of Chang's proteges, David Chiang and Chen Kuan-tai go head-to-head in The Imposter which sees cinematographer Pao Hsueh-li back in the director's chair. Chiang plays Ko Liang, as master of disguise who puts his seven faces to good use when he goes to the aid of two young guardsmen Tseng Yung (Danny Lee) and Tseng Kan (Wang Chung) who have been framed by Captain Lo (Chen Kuan-tai) for murder.