香港法证部高级化验师高安（黄浩然饰）、法医科高级医生闻家希（李施嬅饰）、西九龙重案组高級督察郭辉煌（谭俊彦饰），这「灭罪铁三角」带领着精英团队，用专业的法证科学，揭示惊人的预谋策划；用精密的法医知识，破解隐蔽的人体密码；用严谨的执法精神，披露震撼的罪恶真相！热血记者徐意（汤洛雯饰），童年憾事竟与高安紧扣牵连；法证专才水慧明（陈炜饰），遭至爱背叛顿成杀人疑凶；警队精英高靖（朱晨丽饰），锲而不舍追寻亲人被诱拐真相......
It’s 2011 and we’re in Rome. The government is on the verge of collapse, the Vatican is at crisis point and the city’s squares are quite literally on fire. In the middle world, Cinaglia (Filippo Nigro) has tried to pick up where Samurai left off and, together with Badali (Emmanuele Aita), he is still managing the city’s criminal affairs, with the help of Adelaide (Paola Sotgiu) and Angelica (Carlotta Antonelli), who still head up the Anacletis, and Nadia (Federica Sabatini), who helps them to manage Ostia’s town squares.
改变自坂上泉的小说《渚之萤火》。故事发生在返还协定生效前的琉球岛。1972年春天，派遣至警视厅的刑警真荣田太一（高桥一生饰）回到琉球警察本部任职。刚就任就碰上了岛内回收美元的运钞车遇袭，车内100万美元失窃的大案。真荣田能否顺利解决此次的强盗案件、抓获潜伏在岛上的美元大盗？
