该剧根据Mick Herron的同名系列小说改编，故事围绕着军情五处内一个不正常的特务组，以及他们讨人厌的老板：臭名满天下的杰克逊·兰姆（加里·奥德曼 饰）。他们在真假难辨的间谍世界中努力着，以保卫英国免受邪恶势力的侵害。

　　媒体专家在波克诺山森林深处偶然发现了一具尸体，随后察觉自己被人陷害为一个谋杀臭名昭著的白人至上主义者的歹徒。

　　Following the conviction of some of those involved in the theft and handling of the Brink’s-Mat gold, the police realised that those criminals only ever had half of it. Series two explores what happened to the other half, and the criminal fortune it created. As the police investigation continues, it becomes a tense, high-stakes journey into international money laundering and organised crime, while the police embark on dramatic manhunts as they desperately try to solve the longest and most expensive investigation in the history of the Metropolitan Police.