After reading the file, Xu Kun roughly understood why this case had been unsolved.

First of all, the entrance and exit were monitored, and no one who was not from the dormitory building was filmed entering and leaving before and after the incident.

Secondly, people in each dormitory were able to testify to each other, and there was no time to commit the crime that night.

In this way, the murderer appeared in dormitory 309 out of thin air, and disappeared out of thin air after killing people.

The vigilantes had also wondered if the killer had not entered or exited through the main entrance.

"Don't act in a movie, the fans call you to go back and carry the coffin" Chapter 37 Fu Ping shows his power again is hitting in his hand, please wait a while,

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