C78 Suicide murder?

There were more than 100 people coming in and out of the student affairs office every day, but luckily there was a camera in the room, so it wasn't hard to check it out. As a result, Qiu Shi didn't record any fingerprints on the staff.

Finally, when we arrived at the principal's office, I asked, "President Li, where is the key?"

President Li nodded and walked over to the safe