Hermione knocked three times and stepped back, wanting to have enough space between her and the deadly look in the professor’s eyes. Before she could start another train of thought, she was met by a cold dust of wind that was created by an opening door. In the doorframe stood her former, but still as annoyed-looking, potions professor. It felt like his black eyes were directly staring into her soul, though the amount of disgust that was usually found in his look when Hermione was talking to him in class wasn’t there.