章 176: Chapter 168 Look at the Case

A tall criminal investigator tiptoed in through the back door.

The Qinghe Bureau's small lecture hall was only one and a half stories high, and to access the back door, one had to use a dedicated fire escape, which was not a popular route under normal circumstances.

But today, to sneak in during a lecture without the embarrassment of doing so in front of everyone, quite a few people had chosen to take the back door.

There were probably more than twenty such people.

All in all, that was nearly the manpower of an entire squad.

If that many people were sneaking in illegally, it would take the effort of a whole battalion to apprehend them.

At this moment, the one sneaking in through the back door was Chen Wenming, the leader of the Qinghe Bureau's Forensic Science Division's Trace Examination Group.

He too had been unable to resist coming over after receiving Cao Keyang's text message.