段飞与云诗彤历经磨难，终于喜结连理，但是在教堂举行婚礼时，却突然发现父亲云鼎失踪了，不得已中断婚礼去寻找云鼎。众人几经周折终于找回云鼎，但是云鼎却不肯透露自己失踪的具体经过，让段飞心生疑窦，云鼎似乎在刻意隐瞒什么。而冷锋告诉段飞，有证据表明他父亲的被害很可能与云鼎有密切关系。正在段飞对于调查云鼎之事一筹莫展犹豫不决的时候，弘鼎集团也遭遇前所未有的危机，濒临崩溃边缘。而韩志明更是与父亲韩元仓旧部联合起来与云诗彤作对。此时云鼎意外死亡，段飞随后不知所踪。各种证据指向杀人凶手正是段飞……
As Leo's replacement Thomas Chamberlain arrives Nikki investigates the murders of Rachel Freedman, shot in the head, and her little autistic son Nathan, who was poisoned. Nikki rejects policewoman Anne Burchett's theory that Rachel killed them both but is perturbed when an impostor, claiming to be Rachel's sister, visits the morgue. At the same time the disfigured corpse of Eva Liron is discovered, killed with the same poison as Nathan. She had been the nanny to French hot shot footballer Isaac Dreyfus and was planning to blackmail him over a sex tape of them both. Jewish Isaac is a controversial figure due to his anti-Muslim sentiments but he denies ant part in the murders. Then another victim, Isaac's agent Mousa, is discovered dead.
斯卡佩塔从1990年代担任首席法医，到如今返回故乡重拾旧职并调查一起骇人听闻的谋杀案的历程。斯卡佩塔在追求正义的过程中，必须处理错综复杂的人际关系，包括与妹妹多萝西·法里内利之间的紧张关系，还要面对由来已久的职业和个人恩怨，以及那些可能摧毁她所有努力的秘密。
