Morse finds himself the subject of a murder investigation when his friend, Beryl Newsome, is murdered at a rehearsal of the Magic Flute and he foolishly touches the murder weapon. Morse is suspended and DCI Bottomley, with DS Lewis assisting him, is put in charge of the case. Morse feels that he was set-up and looks to his past to see who, among the many criminals he arrested, might now be setting about seeking revenge. When someone scratches masonic symbols all over his car and he is reported for erratic driving, Morse wonders if Masons may somehow be involved. When a large number of his personal items are found in Beryl's apartment, Morse is placed under arrest.

这部纪录片标志着莫尔斯探长史诗故事的结束，这位著名的牛津侦探闻名世界。从最初的《莫尔斯探长》(1987-2000)，到衍生剧《刘易斯》(2006-2015)，再到十年后的《奋进》系列，探索了20世纪60年代英国侦探的背景故事，莫尔斯探长的故事终于要结束了。通过对所有主要演员的采访，我们探索了这个牛津犯罪宇宙的巨大全球吸引力。在《奋进》最后一季的拍摄过程中，我们来到了幕后，因为他们把60多年相互关联的情节联系在一起。女演员阿比盖尔·肖，莫尔斯星的女儿约翰·肖透露了她是如何成为“奋进”剧组的常客的。主演《奋进》的肖恩·埃文斯(Shaun Evans)探索了他从把侦探的起源带到生活中，到他最近导演剧集的挑战。原著摩尔斯侦探剧演员凯文·惠特利回忆了这部热门侦探剧对他职业生涯的巨大影响。当这部剧接近尾声时，《奋进》的所有演员和工作人员都在思考这部以60年代英国为背景的电视剧的丰富吸引力，他们也为这个史诗般的故事画上了句号。