When it turned and opened to a dark, silent room, Draco frowned. He had expected resistance, another test, perhaps. The floorboards groaned beneath his feet as he entered the cold space. He took short steps as he could not see more than a foot in front of him. The lack of lighting was a complication, and Draco needed a solution. This house was muggle, and Draco recalled learning about muggle homes in third year. Muggle Studies had been a bore, but he remembered being fascinated by muggle electricity. Running through his memories of that lesson, Draco recalled the term "switch", and some device on the wall in a room. 