But instead of seeing the remembered image of the black box, he saw a limbed shadow detach itself from one side of the arch and flit across the opening. It was a man who had been lurking there, and who had just made his departure onto Fleet Street. A moment later Daniel heard iron horseshoes splashing sparks on the brittle ashlars of the street. It was a rider, who had dismounted, and led his horse quietly to the entrance, so that he could spy on Daniel more discreetly. He had probably lost Daniel in the shadows of the vault-wagon and decided to call it a night.