Marcus walked back into the common room to make sure there were no students left over. And of course there was, did the water on the floor not evidence enough that something was wrong. "Oi, Cedric the common room has been evacuated. So why are you in here? GET OUT...NOW!!" He shook his head and headed up to the dormitories.

He turned at the sound of a girl's voice. "And why have you returned to the common room. If the kitchens have been cleared then you should have gone to the Great Hall. Now both you of you go and do not come back in here."