Why didn't the Stocklein's hear the sounds of the guns or of the screaming in "In Cold Blood"?
According to Capote, there are a few reasons for this: what was going on outside that night, the events in the Stocklein's house, and the way in which Perry and Dick committed the crimes. Dick and Perry planned the crime well, brought supplies with them and gagged the Clutters, so there wasn't much noise. Outside, the night of the murders was windy and blustery, so the ambient noise drowned out the sounds of the crime. In the Stocklein's own home was a sick and crying baby. Even though they were up with the child often during the night, they didn't hear anything over the sounds of their own baby.