Halfway along the corridor, he halted before a door, on whose glass panel he could just make out the words “Isaac Kirschell,” and, beneath the name, in smaller letters, the intimation that the entrance was next door. The Hawk's decision was taken in the time it required to produce from his pocket a key-ring equipped with an extensive assortment of skeleton keys. If by any chance he should be disturbed and had entered by the designated office door, his escape would be cut off; if, on the other hand, he entered by this unused door, and left it unlocked behind him, he would still be quite comfortably the master of the situation in almost any emergency.

The door seemed to offer unusual difficulties. Even when unlocked, it stuck. The Hawk worked at it by the sense of touch alone, his eyes busy with sharp glances up and down the corridor. Finally, succeeding in opening it a little way, it was only to find it blocked by some obstruction within. He scowled. A desk, probably, close against it! The door was certainly never used. He would have to enter by the other one, after all, and—no! He had reached his arm inside. It was only a coat-stand, or something of the sort He lifted it aside, stepped in, and closed the door behind him.

The Hawk's flashlight—not the diminutive little affair that had served him for his notebook—began to circle his surroundings inquisitively. He was in a small, plainly furnished private office. There was a desk, two chairs, and a filing cabinet. Also there were two doors. The Hawk opened the one at his left, and peered out. It gave on what was presumably the general office; and at the upper end was a partition with the name, “Mr. Kirschell,” upon the door. He looked at the panel of the door he had just opened. It bore no name.

“This belongs to Kirschell's secretary probably,” he decided. “The other door from here opens, of course, into Kirschell's private office. Wonder what Mr. Isaac Kirschell's business is?”

He closed the door leading into the outer office, and moved across the room to the second door that already stood wide open, and almost directly faced what he had taken for granted was the secretary's desk. He stepped over the threshold. Mr. Kirschell's sanctum was somewhat more elaborately furnished. Apart from a rather expensive flat-topped desk in the centre of the room, there was a massive safe, new and of modern design, a heavy rug upon the floor, and several very comfortable leather-up holstered chairs. A washstand, the metal taps highly polished, and a mahogany towel rack occupied the far corner. The Hawk inspected the safe with the eye of a connoisseur, scowled unhappily by way of expressing his opinion of it, and turned to the desk. He opened a drawer, and picked up a sheet of business stationery. The letterhead read:

ISAAC KIRSCHELL

LOANS, MORTGAGES & GENERAL EXCHANGE

“Ho, ho!” observed the Hawk. “Sort of a glorified pawnbroker, eh? I——”

The sheet of paper was shot back into the drawer, the flashlight was out—and on the instant the Hawk was back in the other office, and crouched on the floor behind the desk. Some one had halted outside in the corridor before the main office door, and now a key was turned in the lock. The door was opened and closed, footsteps crossed the general office, paused for a moment outside Mr. Kirschell's door, then the lights in Mr. Kirschell's room went on, a man entered, tossed his hat on a chair, and sat down at the desk. It was obviously Mr. Kirschell himself.

Through the wide opening between the ends of the desk that sheltered him, the Hawk, flat on the floor, took stock of the other. The man was rather small in stature, with a thin, palish face, sharp, restless, very small black eyes, and he was extremely well dressed—the Hawk noted the dainty little boutonnière in the lapel of the man's coat, and smiled queerly. From Mr. Kirschell's face he glanced at the face of Mr. Kirschell's safe, then back at Mr. Kirschell again—and fingered his automatic in the pocket of his coat.