"They didn't even do the dirty work themselves," Harry seethed on. "They would hermetically seal the escapees in the cellars, then pay someone else to cast a special Cyclone Spell in them, a spell designed to suck all of the air out of the place ... leaving the victims to die horribly ... of suffocation. They all died that way, hundreds of them ... thousands, maybe ... the witches, the wizards, the old ... and the children."