一名沉稳冷静如狡诈猎手的老刑警。三位前程似锦却负罪而行的大学生。一个风光背后罪行累累的煤矿老板。这三个不同阶层的人却因为一宗命案在十八年后碰撞到了起，在斗智斗勇的角力过程中，谁才是罪大恶极的幕后真凶？一个满城风雨的命案。一场触目惊心的谋杀。一桩离奇的矿难事故。三个不同的案子因为一个警察交织在了一起，跨越十八年的调查，终于引出了其中三个案子背后隐藏的惊人秘密。
骊城公安局最年轻的法医齐思哲（罗云熙饰），因一场车祸失去了女友俞菲，但他发觉意外的背后似乎隐藏着神秘的幕后推手。为了调查真相，齐思哲入职成为河城市公安局的刑侦法医，却被迫卷入一桩桩令人细思极恐的奇诡悬案之中，身亡许久的被害者被重重蛛丝包裹，失踪的尸体出现在标本室的福尔马林中……在侦破过程中，他与祝青越（刘雅瑟饰），韩烽（江奇霖饰）强强联合，抽丝剥茧屡破奇案，而牵涉当年俞菲之死的“原钻”毒品案，也逐渐展露冰山一角……
Season 5 finds Murder, She Wrote's intrepid Jessica Fletcher in fine sleuthing form, and venturing farther afield from Cabot Cove--a good thing, since at the rate the murders have been happening, that town would be nearly cleaned out. Some of the best episodes take place in more exotic locales like New York (dead man on the street, wearing just one shoe), Montana (a publishing convention gone horribly wrong) and West Virginia (two whistle-blowers at a coal company found gruesomely murdered). Angela Lansbury sparkles with determination and bonhomie, hitting her stride and then some. Jessica's own life backstory is even filled out tantalizingly, especially in the episode "The Last Flight of the Dixie Damsel," in which an investigation is launched into a mysterious cargo plane that is linked, she learns to her horror, to her late husband. The series' other delight is watching for cameos by stars of a certain age, and this season doesn't disappoint, with appearances by Roddy McDowall, Shelley Fabares, and Dinah Shore--but also some up-and-comers like Megan Mullally (proof positive that the Will & Grace whine was a put-on) and future satirist Bill Maher.
早已忘记笑容为何物的混混山崎虎儿（长濑智也 饰），在替所属帮派新宿流星会催要债款时意外的被逗笑了。逗笑他的就是欠债人——落语（即单口相声）师林屋亭屯兵卫（西田敏行 饰）。于是，虎儿决定拜屯兵卫为师，学费就用债务来抵。游走于黑夜的帮派份子有了新的身份“林屋亭小虎”。 从没接触过落语的虎儿起初很头疼，意外的邂逅了曾经的落语天才，屯兵卫的次子谷中龙二（冈田准一 饰）。极富天分的龙二却执意要经营没有人气造型诡异的服装店“Dragon Soda”。二人的相识，在无形中也影响着对方。而虎儿也找到了属于自己的落语，把身边的事结合传统相声，打造出新的落语。每集一个小故事，即是历代相传的经典，也记录着现实里的点滴，或悲或喜。
