Secret Service of the Imperial Court (錦衣衛), also known as Police Pool of Blood, is a 1984 Hong Kong wuxia film produced by the Shaw Brothers Studio and directed by Tony Lo, starring Bryan Leung and Tony Liu. Set in 15th-century China, the film follows a jinyiwei officer who becomes disillusioned with his purpose under the direction of a corrupt court eunuch based on the historical figure Wang Zhen.