Quickly, he adopted relatively relaxed body language—just another worried but not panicked student, he tried to say, nothing to see here. He stayed with the group of first years, but drifted towards the back, towards the Gryffindor table's benches. It wasn't difficult—everyone else was trying to get out, to stay near Percy, and they were all too ready to slip around him. The group rounded the end of the Gryffindor table, heading for the door to the Great Hall, and Harry quickly ducked beneath the table, reached into his mokeskin pouch, and withdrew his Invisibility Cloak. He draped it over himself and crouched. A moment later, the Great Hall was empty.