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代码 404
Having cracked The Juggler case with his long-suffering partner, the resurrected DI Major has finally reached his potential as the top cop in the SIU. But it came at a price. At last realising that his best friend had shacked up with his wife Kelly while he was “away” (and a bit before), their partnership is over, and the pair go their own ways. But when a 20-year old cold case is reopened, the pair find themselves back together and thrown into the action. With an impending divorce, the return of his long-time absentee dad, and danger around every corner, the pressure seems to be getting to Major and he starts exhibiting strange behavioural glitches. However, much to Carver’s concern, the problems are more serious than a typical reboot can solve, and our cyborg hero may be looking at terminal failure.
Major、Carver和Kelly已经分道扬镳。人工智能增强的Major的情况正在好转，而Carver正在为升职而努力，并在一个新的案件中深陷困境。
Carver和Major收到了关于切尔西桥案件的新信息--20年前，一个似乎凭空消失的团伙犯下了5000万英镑的抢劫案。
DCS Dennett正式重开切尔西桥案，使Major与他缺席的父亲Clifford重逢，后者在20年前未能解决此案。随着Major的人工智能变得越来越不稳定，Parfit博士和Carver为解决这个问题发生了冲突。
Major的人工智能故障严重影响了他的警务工作。Parfitt博士对Major问题的解决方案导致了Dennett的一个令人不安的认识。
Carver与不稳定的Major打交道，Dennett从米利肯生物技术公司请来了一个人。当侦探检查员被分配到一个有一些熟悉面孔的证人保护案件时，Carver了解到令人震惊的真相并与Major对峙。
当Carver和Kelly发现昏倒的Major只剩下三个小时的生命时，他们试图让他接受事实。Major决心在他的人工智能关闭之前解决切尔西桥案件并为他的父亲开脱罪责。
