剧情介绍
Season four of espionage drama "MI-5" finds the team reeling from the loss of Danny (David Oyelowo), but thrown back into action when a bomb detonates near his funeral. Zafar Younis (Raza Jaffrey) and Juliet Shaw (Anna Chancellor) are introduced to the show, in a story involving a potentially devastating terrorist attack in the capital. Later in the season Lyndsay Duncan guest stars as a former MI-5 officer with a deadly grudge, one which threatens the lives of everyone back at The Grid.
芒果TV网友： 设定前后互相打架，前文设定的规则，后文直接推翻，设定毫无严谨性。
bilibili网友： 冲突层次单薄，只有争吵没有深层矛盾。
优酷网友： 《军情五处 第四季》主线稳定推进，支线丰富人物，主次分明，剧情不会混乱。
bilibili网友： 反转合理不突兀，意料之外情理之中。
腾讯视频网友： 伏笔埋得巧妙，前后呼应，二刷的时候才能发现很多隐藏细节。