and carriages begin to return from restaurants and theatres, and as he strolled along, knowing that he was always welcome at the Doctor’s house to chat and smoke, his was the only footfall to be heard in the long open thoroughfare.

Ascending the steps beneath the wide portico, he pressed the visitors’ bell, but though he waited several minutes, there was no response. Again and again he rang, but the bell was apparently out of order, so he gave a sounding rat-tat with the knocker.

Then he listened intently; but to his surprise no one stirred.

Over the door was a bright light, as usual, revealing the number in great white numerals, and through the chinks of the Venetian blinds of the dining-room he could see that the electric lamps were on.

Again and again he rang and knocked. It was surely curious, he thought, that all the servants should be out, even though the Doctor might be absent. The failure to arouse anybody caused him both surprise and apprehension. Though the electric bell might be out of order, yet his loud knock must be heard even up to the garrets. London servants are often neglectful in the absence of their masters, and more especially if there is no mistress, yet it seemed hardly creditable that they would go out and leave the place unattended.

Seven or eight times he repeated his summons, standing upon the door-steps with his ears strained to catch the slightest sound.

Once he thought he heard distinctly the noise of stealthy footsteps in the hall, and he held his breath. They were repeated. He was quite certain that his ears had not deceived him, for in the street all was silent as the grave. He heard someone moving within as though creeping slowly from the door.

What could it mean? Were thieves within?

He examined the door to see if the lock had been tampered with, but, so far as he could discern, it was untouched. He was undecided how to act, though now positively certain that something unusual was in progress.

He glanced up and down the long road, with its rows of gas lamps, but no one was visible. The only sound was the far-distant rat-tat of the postman on his last round.

For the Doctor to be out of an evening was very unusual; and that stealthy footstep had alarmed him. If there were actually thieves, then they had probably entered by the area door. Max was by no means a coward. There was a 

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