Severus walked into his classroom in the dungeons. The chattered ceased immediately. A twisted smile crept on his lips. At least they fear detention.
He issued his instructions briskly, and waved his wand at the board so that the potion ingredients and formula both appeared suddenly. Leaving his students to their work, Severus took a sit behind his desk and pulled out essays to grade.
With each essay, he found himself concentrating less and less. The scene in Hermione's nightmare and the look in her eyes that morning wouldn't leave his head. Giving up grading, he walked around his students.