At 3:17 in the morning, the Jiangzhou City Public Security Bureau received an alarm call.
The woman on the phone had a weak voice, as if she was hiding in the closet.
"Save me... He wants to kill me..."
The receiving police officer immediately asked for the address.
But the woman said something that made everyone's scalp numb:
"You don't have to come, I'm already dead."
Ten minutes later, the police found a female body in an old residential building.
The deceased's name was Xu Qingmian, 28 years old, and a psychological counselor.
There were no fingerprints, no footprints, no murder weapon, and all the doors and windows were locked.
What's even more bizarre is that after the police retrieved the alarm records, they found that a total of seven people called the police before and after Xu Qingmian's death.
Everyone claimed to have seen the killer.
The husband said he was her patient.
The patient said it was her mother.
The mother said it was her husband.
Neighbors said the deceased was not dead at all.
The last call came from Xu Qingmian's own mobile phone.
But at that time, she had been dead for forty-six minutes.
After investigation, Interpol Shen Yan discovered that Xu Qingmian was treating a girl suffering from severe post-traumatic stress disorder. The girl repeatedly said that she dreamed of a non-existent room with a mirror and a corpse hidden behind the mirror.
At first everyone thought it was the patient's hallucination.
It wasn't until Shen Yan found a sealed mirror in Xu Qingmian's home.
Behind the mirror, there is no body.
There is only an old photo from twenty years ago.
There are seven children in the photo.
One of the children's face was shaved off with a knife.
