Daniel now leaned to one side, planting his elbow on an arm-rest and supporting his chin on his hand. He did so, not because he was tired and weak from hunger (though he was), but so that he could see round Mr. Threader’s head out the rear window of the carriage. For he had glimpsed a peculiar apparition overtaking them. A rustic person would have guessed it to be a coffin levitating through the air. And considering the number of corpses that had been disposed of in Fleet Ditch over the centuries, there was no better place in London for a haunting. But Daniel knew it was a sedan chair, probably the same one that had emerged, a few moments ago, from the alley across the way. Looking across the Ditch Daniel could see directly into that alley, or one like it, and it seemed to him like the vertical equivalent of the Fleet Ditch itself, a black slot filled with who knew what sort of vileness. What had a sedan chair been doing in such a place? Perhaps taking a gentleman to an unspeakably perverse tryst. At any rate it was now gaining ground on them, coming up along one side. It got close enough that Daniel could sit up straight and view it directly out the carriage’s side window. The windows of the sedan chair—assuming it had windows—were screened with black stuff, like a confession-booth in a Papist church, and so Daniel could not see into it. He could not even be certain that anyone was inside, though the ponderous jouncing of the box on its poles, and the obvious strain on the two massive blokes who were carrying it, suggested that something was in there.