Which could only have occurred along Fleet Ditch in the minutes before the explosion. Perhaps Isaac had been in that sedan chair. Perhaps it had been nothing more than a coincidence that he had fallen in alongside Mr. Threader’s carriage when he had. Perhaps he had been on his way from some errand—and it would have had to’ve been a very dark and strange one indeed—in the dangerous alleys on the eastern brink of the Ditch, en route to his dwelling off Leicester Fields. But then why had he stopped in the entrance to Crane Court?