Flame in Ashes

Also known as Underground Sparks, กตัญญูปกาสิต, 地下火花

One of Thai-Hong Kong co-production films during 1957-1962. The story was set in Thailand during the Sino-Japanese war. The Chinese overseas banker was mysteriously killed, then soon after the assassin was died a unnatural death. A series of subsequent incidents make the police suspect that it is related to the fake patriotic organization, Green Claw Gang.