Mike’s whole body was bathed in sweat at the thought of himself thrown inside the vault with armor-plated doors inexorably shutting out every atom of fresh air. He clenched his teeth to keep them from chattering. The man outside took on the aspect of a monster. To Mike, he was something more or less than human. Mike might be a criminal, and could visualize, — shrinking, — the thought of killing a man in making a getaway, but not the deliberate strangling of a man in cold blood, for the covering of his tracks. That was the other man’s plan.
There would have to be a struggle, a fight of some sort. Mike’s leg throbbed horribly. He doubted that it would support his weight. And in an instant or two more he would inevitably be fighting. One way or another, he was bound to be in terrible danger. If he shot the other man, the pistol-shot would raise an alarm. If he did not shoot...
He heard a faint thump on the floor.
“One load,” said the voice outside. “Two or three more. Jack, and I’ll skip.” The voice, already soft, became muffled as its owner went into the vault. “Here’s the payroll. Nice packet, in itself. I’ve a good twenty minutes left. You realize what will happen, Jack? I loot the vault, tap you on the head, take off your bonds and put you in here. Then I push on the switch, the doors close on you, and I get away with the stuff. In the morning they’ll find you inside, and the stuff gone. Your fingerprints will be on the knobs. Inference will inevitably be that the trap got you as you were handing out the stuff to a confederate. Pretty scheme, isn’t it Jack?”
The man seemed to be gloating a little over the agony of his prospective victim. Mike, struggling to massage his leg into some semblance of life and to make no noise in doing so, heard the infinitely faint sound of the bound man struggling upon the floor. He made a curious moan, utterly despairing.
“Just one more trip, Jack,” said the voice, filled with a terrifying amusement. “Then I’ll come back for you.”
Mike’s throat was dry. He feared that man he had not seen; feared him with the ultimate of terror. And in a moment or two more he would have to fight him, struggle with him.
Cold to the marrow, dry-lipped with fear, his little eyes staring, Mike started to raise himself to his feet as he heard the other man enter the vault. His leg was numb. It would barely hold his weight up. Mike’s teeth began to chatter. He heard the man rummaging about inside the steel tomb. And then Mike felt a sudden agonizing pain in his back. Something jabbed cruelly into his backbone, hurting horribly. And then, with a spitting flash of bluish light, the pain ceased. But outside, there was a sudden rumbling and a cushioned crash. Then a distant, muffled scream, barely audible.
Glassy-eyed with terror, Mike flung open the door, to run. He saw a small electric lantern upon the floor, its beam directed at the two huge doors of the vault. And they were closed!
In the fraction of an instant Mike knew what had happened. Rising, in the closet, he had jammed his back into the knife-switch that turned on the current for the burglar-trap. It had closed the doors, imprisoning the unknown Saunders in the air-tight vault. And he, the imprisoned man, had cut the wires that would have warned the police of his predicament.
Uttering a little gasp that was compounded of horror and fear, Mike started forward, only to have his numbed leg give way beneath him. The fall sobered him to a curious, fictitious calmness. He flashed his lamp on the bound, still figure. Its eyes were closed. The face was utterly white.
“Fainted,” said Mike to himself, shakily. “Safe enough, though...”
He suddenly scrambled to his feet again and ran. Through the dark hallways and down the steps he fled. He was possessed by an unreasoning terror. The window through which he had entered was open. Evidently the other man had arranged it for his own ingress. Mike fairly fell outside, and suddenly was in complete possession of himself again. With the quiet, dark night all around him, he felt secure, and he abruptly became conscious that he was carrying something in one hand. He had picked it up when his leg gave way.
He let a faint ray trickle through his fingers upon it. Then he grinned uncertainly. Evidently he had happened upon a portion of the payroll. He saw yellow backs, at any rate, with the bills in the bundle he held.
“M-my Gawd,” said Mike, unevenly. “That was a shock. There’ve been shocks all around tonight. That feller in the vault... An’ the feller that fainted... Say” — a thought struck him — “wonder if he’ll come out of that faint in time to tell about a feller bein’ in th’ vault. M-my Gawd! Maybe he don’t know!”
He looked back through the window he had left, his breath coming hurriedly, uneasily. He saw a faint glow a long distance away. The watchman was making his rounds again. Mike saw the confident, assured steps of the man by the light of his lantern. His legs threw monstrous shadows on the walls. He went on his way unhurriedly, reached a time-clock and extracted a key. He inserted and turned it, registering his presence and vigilance upon a strip of paper inside the mechanism. Then, casually, he went on his way.
“Brother,” Mike apostrophized the unconscious figure, “I just hadda shock. Two other fellers had their shocks. An’ now, ol’ top, you’re in for yours. Here’s hopin’.”
The watchman turned a corner and was lost to sight, but his steady, even footsteps came dully to Mike’s ears. He was climbing the stairs, and he wore squeaky shoes.
Mike slipped quickly and quietly away.