Walter Neff (voiceover): "That was all there was to it. Nothing had slipped, nothing had been overlooked.There was nothing to give us away. And yet, Keyes, as I was walking down the street to the drugstore, suddenly, it came over me that everything would go wrong. It sounds crazy Keyes, but it's true, so help me. ...I couldn't hear my own footsteps. It was the walk of a dead man."