《摩斯探长前传》第八季共3集，于2021年9月播出。本季后，该剧总集数与“牛津探案”系列剧的另外两部《摩斯探长》和《刘易斯探案》一样达到33集。

　　《摩斯探长前传》第九季获得预订，共三集，预计2023年播出，同时也确认本季是该剧的最终季。

　　这部由Emilia di Girolamo负责编剧的剧集讲述1992年的真实犯罪事件 - Rachel Nickell强奸谋杀案。当时警方认为Colin Stagg是真凶但却证据不足，而无奈之下年轻探长决定与国内一名犯罪侧写师合作，并进行一次十分大胆的卧底行动。Niamh Algar饰演卧底警员Lizzie James，她被指派接近嫌疑犯Colin Stagg并引诱对方。
　　另外，现实是Colin Stagg并非真凶，凶手真身是Robert Napper，而08年时英国内政部得向Colin Stagg赔偿706000英镑。

　　在得到线报前往逮捕一起谋杀案的重大嫌疑人的路上，总督察Joanne Davidson注意到异常状况，临时决定带队改道去处理一桩正在发生的持械抢劫案件，从而延误了逮捕嫌疑人的最佳时机。这到底是一个纯粹的巧合还是早有预谋的设计呢？在了解相关情况后，反腐小组AC-12决定介入调查……

　　这部4集剧讲述John Darwin伪造自己的死亡，以骗取人寿保险并避免破产。他和妻子Anne Darwin串谋，说服保险公司John Darwin独自去乘皮划艇时失踪，并得到超过25万英镑保险金。
　　当时债台高筑的Darwin家已经有抵押贷款，还刷爆了13张信用卡，共欠下6.4万债务，当时Anne想申请破产，但最终被丈夫说服实行这看似荒谬的计划；但这计划成功实行长达5年，甚至骗过了两名儿子，得到保险金的John及Anne后来搬到巴拿马去，直至07年John Darwin在伦敦现身才被揭发。

　　公元872年，四分五裂的英伦帝国受到入侵的维京人的蹂躏，仅剩下阿尔弗雷德大帝统治的威塞克斯王国屹立不倒。在这个充满混乱的年代，年轻勇士尤特雷德（Uhtred）逐渐成为传说中的英雄。他的父母（撒克逊贵族）都被维京人杀死，他自己也遭到劫掠者的绑架，被他们当做自己的孩子抚养成 人。他被迫在自己出生的祖国和抚养自己长大的亲人之间做出选择，他的忠诚度一次又一次面临考验。为了重获自己与生俱来的权利，尤特雷德（Uhtred）走上了一条危险的道路。他游走于敌对的双方之间，在一个新国家的诞生过程中起着关键的作用。他的最终目标是夺回自己祖先的土地，但那绝非易事。

　　Filming has started on BBC Two’s critically acclaimed drama The Last Kingdom, from Carnival Films. The second series, adapted by BAFTA-nominated and RTS award-winning writer Stephen Butchard from Bernard Cornwell’s bestselling series of novels, is to return to BBC Two next year, with Netflix joining as a co-production partner.
　　The emotionally complex and compelling landscape of revenge, rivalry, hostility, corruption, love, sex, loyalty and friendship, forms the backdrop to a gripping adventure based on Cornwell's novels, The Lords Of The North and Sword Song – part of the hugely popular bestselling franchise The Last Kingdom.
　　Set in the year 878, the second series returns as fearless and instinctive warrior Uhtred continues his fight for his native land of Northumbria. Uhtred, having given his sword to King Alfred, despite his upbringing by the invading pagan Danes, embarks on his voyage north to reclaim his own fate: to avenge Earl Ragnar’s death and recapture his ancestral lands of Bebbanburg.
　　Alfred’s conviction to create a united England is stronger than ever, and he sets his sights on the wild lands of the north, which have fallen into chaos and rebellion. It is a dangerous time for Saxon and Dane alike, but Alfred champions a new king - a Christian Dane - to unite the tribes. However, this king has been enslaved, and Uhtred becomes embroiled in a rescue mission, which brings him face to face with an enemy of old.