本剧由四宗发生在香港扣人心弦的真实刑案带出四个令人惊惧的罪行藉由一队重案组的警探办案实录贯穿而成包括耸人听闻的「屯门色魔强奸案」喧腾一时的桃色纠纷「溶尸案」使市民提心吊胆的「大圈仔军火械劫案」及「淫业大厦扫黄行动」案件生动地描绘各阶层犯罪的人性丑恶而编剧为了加强剧中人物与案件的关连性特别穿插男女主角CID张兆军林嘉华女CID丁兰蓝洁瑛重案组总督察方伟陶大宇扫黄组女总督察刘婉仪梁婉静及聂志华张国强一段微妙的五角感情关系交错编织成属于都市人性化的实录档案
Dr Brewster#39s suicide takes a particular twist when the pathologist determines that he had also been bound and gagged The Brewsters, both medical doctors, ran a private clinic and their son John, who lived at home, is doctoral candidate in philosophy One possible suspect is Michael Steppings who threatened the Brewsters and their nurse after his daughter suffered severe sideeffects and is now in a vegetative state from a botched operation two years previously The forensics lab determines that one of Steppings#39s threatening letters was altered and Morse learns that Brewster may at one time been having an affair, so he must consider another possible motive for murder
