You are looking up at Mrs.Norris',Mr.Filch's cat, petrified body hanging from a lamp against the wall. Harry,Hermione and Ron see you there. The rest of the school filter out of the Great Hall after the Halloween dinner seeing the scene. Draco sneers and reads the words on the wall that's written in blood

Draco:"The Chamber of secrets has been open, enemies of the heir beware. You'll be next mudbloods"