Dirt

Dirt and dried mud clung to every surface of the house, a layer of grime so thick it suggested years had passed since any cleaning had been undertaken. Yet the inhabitants, their own clothes equally soiled, acted as if everything about the situation were normal. Their sunny dispositions and politeness in the face of even the rudest insinuations forced the consideration that exterior appearances were, at least in this situation, misleading.

When the discovery of a mass grave was discovered underneath their domicile, conclusions were again revised. Contamination of the home is indeed a sign of contamination of the soul.