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.
如何评价《摩斯探长第四季》
首先声明，我是真的挺喜欢这部《摩斯探长第四季》小片的，n刷过后我也看了一些导演和演员的相关采访，对这个电影也有了一些更深的感受和想说的话。这其实是于适自己在路演的时候对电影的形容，我觉得还挺准确的：他说这部电影就像一瓶冰镇过的橘子姜味汽水，一开始喝下去凉爽愉悦，但最后回味起来又会有点辛辣苦涩，我现在可以说就处在这个回味的阶段。
优酷网友热评：慕名去看，画面很精致，演技也在线，台词意味深长，编剧非常用力，最终呈现出来的是一支华丽的舞蹈。
来自网易云网友的评价：导演以自身的传统美学功底，对电影的写实艺术特性也有精深的理解和把握，他特别擅以生动的细节描绘人物的内心活动，并调动电影的各种艺术元素为塑造人物服务。
