’T WAS NATURAL TO ASSUME of a prison that, like the Inferno of Dante, it would only get worse as one worked one’s way in through the gate and pierced its concentric wards. Daniel had been circumventing the Fleet—a largely autonomous city of about a thousand souls—since he’d been tiny. The prison building proper (burned down in 1666, rebuilt in 1670) was a bit shy of two hundred fifty feet in length from the Poor Side common-room on the south end, to the Chapel on the north; forty feet deep; and forty high (sufficient for five storeys of low-ceilinged apartments, if one counted its half-buried cellar). But this structure, big as it was, could no more be confused with the Prison as a whole, than, say, the White Tower could be mistaken for the Tower of London complex. The Fleet Prison, as Daniel had always known it, was a squarish town about five hundred feet on a side—so, on paper, six acres or so. But seen up close it was like one of those writhing horrors that Hooke used to view under his microscope, which was to say it felt a thousand times larger than it was, because so complex and seething. Its outer boundary was understood to run, on the western side, right up the bank of the Fleet Ditch. On the north, all of Fleet Lane lay within it, but the buildings on the north side of the street lay without; so a prisoner could walk down the lane, trailing a hand along the fronts of the buildings, but if he or she stepped thro’ a doorway it would be deemed an Escape, and set in motion a train of financial consequences for the Warden. Similarly on the street called the Great Old Bailey (which coincided with the eastern boundary) and Ludgate Hill (southern), though along the latter it was more complicated because the prison had thrust out three narrow tendrils along as many small Courts that depended from the south side of Ludgate. Thus the squarish, six-acre rules (as it was, for some reason, called) within which certain prisoners could roam about un-chained and unguarded, provided that they had taken out a Warrant of Attorney to confess a judgment to the amount of the debt with which the prisoner stands charged, with a defeazance on the back declaring it is to be void in case no escape should take place . This and other such securities, by very long-standing tradition, made it at least theoretically possible for those who’d been put in prison for debt—which meant most of the Fleet’s population—to move, and in some cases set up domiciles, outside of the Prison proper but within the rules, which was nearly indistinguishable from other seedy neighborhoods of London. The only way you’d really know you were in a prison was that certain chaps had odd habits of locomotion—in the interior of the six acres they’d move about like anyone else, but as they approached the boundary streets they’d become tentative, as if they could sense an invisible barrier, and would sidle along cautiously, lest a misstep or traffic accident push them over the border and make them guilty of Escape.