The procession drew to a halt there, under the embrasures of the bastion called Brick Tower. Daniel now perceived that Brick Tower had been conceived as a mustering-place where the very bravest, drunkest, or stupidest knights in the Tower of London would gather in preparation for a sally. When they were ready, they would charge down a stone stair that ran along the front of the inner wall, make a sharp left, and continue down a second flight, erupting from the door where Isaac was standing, into the ditch, where God knows what would transpire between them and any foe-men who’d penetrated that far, and survived the fire from the casemates.