yle=f>夫妻感情出问题，两人回到岳母家里，却不料女婿与岳母...

上元年间，蛰伏于长安的刺客伺机不轨。为破此案翊府中郎将沈川遵旨会同七杀阁成员明察暗访，经过一番追查不但引出了隐藏的刺客，还查清了参与此案的幕后推手，最终合力缉拿真凶，将他们一网打尽。

As bombs fall on London, writer Agatha Christie decides it is time to kill off her most famous creation.