Rhett
The three of us stood in Headmistress Vale's office, staring at the computer screen in stunned silence as the security footage played.
Headmistress Vale dimmed the lights and hit play.
The screen on her wall came to life. A wide, fisheye view of the deserted classroom corridor from nearly three weeks ago, panned across the screen. It was the day we had sent all the students back to their dorm rooms because of the snow rogue's threat.
There was no denying what we were seeing; the person in the footage was clearly Charis moving through the corridors.
The timestamp showed that she arrived at her classroom around 19:22. First, she scanned the empty hallway, palmed her access card, and the classroom lock flashed green.
Once she was inside, the camera angle switched to the room feed: she went straight to her desk, opened her school bag, and rifled through it, retrieving something. She closed the bag, checked the wall clock and left.