"Whoever it was covered their tracks well," Harry snipped, annoyance at the carefulness of their suspect clear in his tone. "Whatever they used to blow out the building didn’t leave anything behind except a vague signature, and it had already faded too much for the team to catch any details. Aside from the slightest sign of a struggle–which was mostly covered up by the mess from the bomb–you could almost assume it was a gas leak. The shops beside hers said they could smell something funny and had called to have someone come look at it just before the explosion. We asked everyone around if they had seen anything, but whoever did it timed it well. Diagon Alley is quiet at that time of day, right between shoppers and the rush of workers heading home. No one saw anything."