We crossed the rather dimly lighted hall, which had a sentry posted at either end of it, and then my conductor threw open a side door, and silently motioned for me to enter in advance of him. It was a spacious room, elegant in all its appointments, but my hasty glance revealed only three occupants. Sitting at a handsomely polished mahogany writing-table near the centre of the apartment was a short, stoutly built man, with straggly beard and fierce, stern eyes. I recognized him at once, although he wore neither uniform nor other insignia of rank. Close beside him stood a colonel of engineers, possibly his chief of staff, while to the right, leaning negligently with one arm on the mantel-shelf above the fireplace, and smiling insolently at me, was Brennan.

The sight of him stiffened me like a drink of brandy, and as the young aide closed the door in my rear, I stepped instantly forward to the table, facing him who I knew must be in command, and removing my hat, saluted.

"This is the prisoner you sent for, sir," announced the aide.