Daniel spent a while trying to spy into the upper windows of the mystery-shop with his telescope, because he thought he'd glimpsed silver hair in one of them, and so for a while he was only aware of other customers' comings and goings by their bow-waves of perfume, the rustling of ladies' crinolines, the ominous creaking of their whalebone corset-stays, the whacking of gentlemen's swords against table-legs as they misjudged distances between furniture, the clacking of their slap-soled booties.