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72 doorkeeper, then passed inside. The door was shut to again.

It was at this juncture that Tommy lost his head. What he ought to have done, what any sane man would have done, was to remain patiently where he was and wait for his man to come out again. What he did do was entirely foreign to the sober common sense which was, as a rule, his leading characteristic. Something, as he expressed it, seemed to snap in his brain. Without a moment's pause for reflection he, too, went up the steps, and reproduced as far as he was able the peculiar knock.

The door swung open with the same promptness as before. A villainous-faced man with close-cropped hair stood in the doorway.

"Well?" he grunted.

It was at that moment that the full realization of his folly began to come home to Tommy. But he dared not hesitate. He seized at the first words that came into his mind.

"Mr. Brown?" he said.

To his surprise the man stood aside.

"Upstairs," he said, jerking his thumb over his shoulder, "second door on your left."