《军情五处 第八季》 是Alrick Riley,萨姆·米勒,爱德华·霍尔导演的作品，发行于2009年（英国），由理查德·阿米蒂奇,彼得·弗斯,赫米奥娜·诺里斯,吉娜薇·欧瑞丽,米兰达·莱森,罗伯特·格林尼斯特,妮可拉·沃克等主演的一部欧美剧。
讲述了：　　The eighth season of the British spy series "MI-5," which follows secret agents as they foil evil plots around the globe, begins with the fallout from Harry's kidnapping by the Russians. A mysterious organization known only as "Nightingale" is the ongoing focus of the eight episodes. And Lucas' relationship with CIA agent Sarah Caulfied (Genevieve O'Reilly), reignites concerns over his loyalty. This season also sees the exit of one of the few original cast members, Malcolm Wynn-Jones.