As a prison riot erupts into violence, Red comes face to face with the ring leader: the man who once held him hostage and nearly drove him mad. But what they don't know is a killer's amongst them, preying on their weaknesses. 纠结的过程和张力。伦敦人真的都这么保守么?。 一次突然的问讯，引发了监狱的暴乱。当暴乱被平息后，在警察医院内与暴乱有关的犯人一个接一个神秘被谋杀。探长和他的队员立即开始调查，然而看起来没有人是干净的。一切的起因究竟是什么？
