Five years ago, fifty-three members of the Ji family in the capital committed mysterious "mass suicide" overnight. Only the youngest daughter Ji Qingyu, who was far away from home, survived.
The case caused a sensation, but no solid evidence was found. It eventually became a mystery, and Ji Qingyu also disappeared from the world.
Five years later, a series of vicious cases broke out in Jiangcheng. The methods of committing the crimes were strange and vaguely similar to the Ji family case.
In order to seek a breakthrough, the police station director hired a criminal psychologist to assist in the investigation - and this expert was none other than Ji Qingyu, who had disappeared for five years.
The bloody truth of that year will gradually be revealed in the layers of fog as she chases the murderer step by step.
There is no emotional line, it's just a matter of friendship, don't disturb me if you don't mind.
