故事发生在1991年的迈阿密，讲述Dexter从学生成长为连环杀手的故事。

麦琪和尼根来到了一个世界末日后的曼哈顿，很久以前就与大陆隔绝了。这座城市里到处都是死者和居民，他们把纽约变成了自己的世界。

When his daughter is brutally murdered and legal justice looks unlikely, William Duncan takes the law into his own hands, setting out on a quest for r