Regulus saw the squib Filch looking back at him out of the corner of his eye, almost as if he was drooling at the thought of giving punishment to so many students. He looked around and saw the three of the newcomers standing in the doorway, Dumbledore in front, his wand again in sheath.
At that moment, Regulus fully understood for the first time why people said Dumbledore was the only wizard Voldemort had ever feared. The look upon Dumbledore's face as he stared down at the well bound students was more terrible than anything Regulus have ever seen. There was no benign smile upon Dumbledore's face, a sense of power radiated from the man all around burning with an intensity like a sanke wrapped around sandalwood tree. A thick tension radiating an aura of menace hung in the air ready to engulf everyone shall anyone broke the silence.
He stepped into the infirmary, the squib and professor of charms following him. Argus Filch turned to look at me almost glaring as if he wanted to put me together with the miscreants into the other corner of room. Professor Flitwick came straight to the mediwitch.
"Very nasty beahviour, Filius" she whispered and started talking in whispers as he moved a bit towards the injured and away from the lady. The thin line of her mouth was twitching as though she was about to start screaming about something.