Tom Barnaby joins the Causton Chamber of Commerce trip to Brighton as he is suspicious of dodgy mayor Hicks' plan to buy coastal land on which to buy chalets. Also opposed to the plan is Lady Matilda William,who has had threatening letters, as have the local vicar, oily property developer Hugh Dalgleish and hotelier Jenny Russell. Lady Matilda is descended from Richard of Guillaume,a ruthless contemporary of William the Conqueror,and believes that her son Richard,last of the line and brain-damaged for twenty years,was the victim of ancestral jealousy.In Brighton Dalgleish is murdered with the sword stolen from Guillaume's tomb and Hicks is arrested for fraud. Having learnt how Richard came by his accident Barnaby is convinced that Richard and not the property scam is the cause of yet another victim being claimed by the sword of Guillaume.

　　《骇人命案事件簿》是英国独立电视台制作的一部长青推理电影集，取材于英国当代推理小说家Caroline Graham的作品，截至2010年为止共拍摄十三季81集。该剧以总督察Tom Barnaby以及他的年轻拍档Troy为主干，讲述二人凭借机智抽丝剥茧，悉破复杂凶案的故事 ，此外这两个人在查案过程中所不时表现出的幽默机智、亦庄亦谐也是此片受欢迎的原因之一。全剧在英国南部白金汉郡取景拍摄，漂亮的小村庄充满了浓浓的英伦风味，与命案本身的骇人听闻形成强烈反衬，为英式推理迷以及克里斯蒂小说爱好者们的必看之作。

　　Death’s Shadow—A string of bizarre murders leads to the discovery of a long-buried secret.　　Strangler’s Wood—The strangling of a beautiful Brazilian woman harks back to three earlier murders.　　Dead Man’s Eleven—A cricket bat used as a murder weapon implicates a tycoon’s son.　　Blood Will Out—Rival clans of travelers disrupt the peace and incense a local magistrate.

　　Death of a Stranger—When a tramp dies fleeing from fox hunters, the investigation uncovers a trail of murderous deceit.　　Blue Herrings—A series of deaths at a nursing home causes the residents to suspect foul play.　　Judgement Day—Midsomer Mallow has a shot at the Perfect Village title, provided it can keep a murderer at bay.　　Beyond the Grave—Unearthly happenings in and around a local museum create an atmosphere of terror.

　　Garden of Death—One of the most beautiful spots in the county becomes a source of contention.　　Destroying Angel—When a hotel owner dies, the manager misses the reading of the will that names him part-owner.　　The Electric Vendetta—A mutilated body found in a crop circle leads some to suspect aliens have invaded.　　Who Killed Cock Robin?—A murder mars plans for the upcoming wedding of the village squire’s daughter.　　Dark Autumn—A postman is brutally murdered, and it turns out he was delivering more than the mail to village women.　　Tainted Fruit—A wealthy young landlady fears for her life after she callously ignores the plight of an elderly tenant.

　　Called to the village of Midsomer Market to investigate someone's car being set on fire, Barnaby and Troy soon find themselves investigating the murder of Marjorie Empson who is found in her home bludgeoned to death. The focus of their attention is the the Reading Club, a group of five women who meet regularly not to discuss books in fact, but to manage a investment fund they have established. Two of the members were hoping to cash out their investments, but were prevented from doing so by the others. There are several other suspects, all in one way or another connected to the financial and investment world, but when a second member of the book club is killed, the police realize they may need to look for an altogether different motive.

　　When two bodies are discovered by the side of a fishing stream, Barnaby and Troy have yet more murders to solve. Isobel Hewitt had a zest for life that some can only hope for. She loves to drive her red Jaguar at top speed and generally enjoyed the finer things in life. Although loved by many, there were those who weren't quite so charmed by her. Margaret Seagrove was convinced that she was the member of the local fishing club using weighted lures in the local stream. Her nephew and his wife, with whom she resided, saw her as a burden now that she had spent most of her accumulated capital. The second victim is the local doctor, Duncan Goff, a well-known philanderer who had affairs with many of the local ladies. The police must first determine if both were intended victims or if one was simply in the wrong place at the wrong time.

　　A cave in of a local canal tunnel under restoration reveals the skeletons of eight individuals. While most of the skeletons are from a cave in when the canal was under construction in the 19th century, one is obviously of a more recent vintage. Dental records identify him as Eric Edwards who was reported missing in 1965. Supt. Barnaby delves into the history of the canal to see if he can find a connection. DS Troy is over the moon when he learns that he has qualified as a Detective Inspector and that there may be a job for him in another county. In what may be his last case in Midsomer, he follows up on an anonymous tip that teenagers are harassing a local hermit, Tom. When one of those teenagers is shot through the head, Barnaby leaves "Inspector" Troy in charge of the case.

　　Barnaby and DS Scott investigate the murder of Patrick Pennyman, an undertaker in the village of Fletcher's Cross. The man's wife thinks he committed suicide but the pathologist determines he was killed. The man died soon after his return home after attending a service at the local spiritualist church, itself the source of some controversy in the village. As the investigation progresses, the police learn that Pennyman was generally disliked. Former employees, business partners and others all had a grudge against him of one sort or another. Barnaby believes the head of the Spiritualist church to be a charlatan and while there is a link to the ever increasing number of murder victims, the solution to the crimes is to be found in an illicit love affair.

　　Deserted for years, an historically significant house is coveted by a number of people: a yuppie couple looking for a country home to restore, a local builder and his estate agent partner looking for development rights, and a conservationist. The owner is anxious to sell, but when a couple of deaths occur in the vicinity, things come to a halt while Inspector Barnaby investigates.

　　Barnaby and DS Ben Jones investigate the death of Simon Bright who is found dead inside an old World War II vintage Humber parked at an abandoned airfield. From all appearances, the death appears to be a suicide, but the pathologist determines that the man suffered a severe blow to the dead and may in fact have been unconscious when he died of carbon monoxide poisoning. Simon Bright's girlfriend, Laura Sharp, is nowhere to be found, but the death of the aging village Lothario and the attempted murder of another of her friends narrows the list of possible murderers somewhat. Barnaby is convinced that one of Laura's ex-lovers is responsible but given her rather active life, the question becomes which one?

　　1780年的英国，罗斯·波达克（艾丹·特纳 Aidan Turner 饰）为了逃避走私指控被迫参军并远赴美洲战场作战，将未婚妻伊丽莎白（海达·里德 Heida Reed 饰）留在身后。三年后，罗斯从美国独立战争的战场上返回家乡康沃尔郡。他发现父亲已经死了，父亲的矿场关门了，其他家族矿场也在不断裁员，房子破败不堪，就连伊丽莎白也将嫁给自己的堂兄弗朗西斯（凯尔·索列尔 Kyle Soller 饰）。罗斯在苦闷中决定开始新的生活。他偶然在集市上救下了性格刁蛮的乡下少女德梅尔扎（埃莉诺·汤姆林森 Eleanor Tomlinson 饰）并雇佣她为女仆，两人在每天的相处之中渐渐产生了情愫并结为夫妻。罗斯试图重震父亲的矿井产业，但是他的商业对手乔治·沃勒根（杰克·法辛 Jack Farthing 饰）处处使坏。弗朗西斯因为生活上的不顺和对罗斯的猜忌与伊丽莎白逐渐疏远，生意上的挫败更是让他险些失去一切。家族的没落，兄弟的隔阂以及对手的搅局都让罗斯·波达克复兴家族的道路倍加艰辛，唯有妻子德梅尔扎永远的守候能给罗斯暗淡的生活带去一丝温暖。　　然而，就在生活趋于平静之时，已经成为寡妇的伊莉莎白选择改嫁，而她的新一任丈夫乔治恰恰就是波达克在生意场中的劲敌。