Secrets of the Magic School

Unlike most of your friends, you stayed at Hogwarts school for the holidays and are rather unhappy about it. The last exams and the annual ball have passed, even the Quidditch cup is over. Boredom! But at the very moment you thought nothing interesting would happen for all the holidays, one of the doors swung open and Professor Dumbledore appeared in the corridor. Stumbling and tripping over the hem of his robe, he came to the window, adjusted his glasses and transgressed. What could have disturbed him so much? What secrets does he hide within the school walls? Speaking of the door, the professor didn't close it...