A 17-year-old high school student died in a scrap iron factory with strangulation marks on his neck.
The first call the police received came from a librarian named Xu An.
He said he received a bloody package addressed to his name.
After asking, he came out.
He was just a mail receiver, no one suspected him.
But Pei Xianyu felt something was wrong.
A librarian received a bloody threatening letter,
Logically speaking, you should be afraid and stay away.
But Xu An didn't.
He was so calm.
Pei Xianyu began to check Xu An's background.
Then I found——
He is an orphan, but he has no elementary school records, no middle school records, and no traces of a normal person.
It's like this person appeared out of thin air.
"Who are you?" Pei Xianyu asked.
Xu An didn't answer.
Because what he is really looking for is a person who disappeared three years ago.
And this case happened to lead him to that person.
They were looking at the same body.
But Pei Xianyu was checking someone.
Xu An is checking a website.
Intention: justice and persistence