Professor Ren, a temporary relief professor

I turned around, scared with a sob, and suddenly he seems to become stunned.
"W-who are you? I've never seen you before!" he stutters.
"I'm Hermione Granger!" I stuttered back.
"Well, Hermione Granger, I've been told that due to recent security measures, and the school was warned, anyone caught out of their dormitories after hours will be expelled," he says, gaining strength in his voice. I froze, in horror.

"However..." he trailed off.
"Yes!?" I asked, wondering if I had a chance.
"I may let you off... if you give me what I want..." he said, his voice lowering.
At first I didn't get what he was saying, then suddenly it struck me.
"You'd... that's... wrong." I said, backing away.

"Very well. I'll inform the headmaster." he said, turning around.
"Wait, Professor!" I stuttered. I had ****.
"Yes?" he asked.
"Take me to your office," I sighed, defeated.
"Very good..." he muttered, beckoning me to follow him out the door.