"Come on then," one of them said. She and Draco ducked under and Fred – George? – grabbed her by the arm and pulled Hermione straight through the wall. She gasped as the sensation of walking through something that should be solid made her hair stand on end. It was a slimy, slippery feeling, and she couldn’t get the thought that her atoms and molecules were shifting to slip between the walls atoms and molecules out of her head. Hermione did not like it. But then they were through and in the cramped, dark passage, and the noises of the Death Eaters were growing louder. Fred and George started pulling Hermione along again.