"No," William answered, shaking his head. "Not besides Inferi, and this doesn't fit. We don't even know if this is magical, or biological, or if they're..." He swallowed, remembering the glazed look in the House-elves' eyes when they'd smelled Shane's blood. "Already dead."
He peeked around a corner, hesitating for a second to make sure nothing was hiding or camouflaged by the tapestries. "Are the children all safe and accounted for?" he asked, glancing over his shoulder. "Do you need me to help with that?"