They were admitted almost immediately, the door seemingly opening of itself, and they quickly stepped across the threshold.

Within the house was just as dark and gloomy as it was without, and as the two visitors entered, a voice came from out the shadows, and said, in a curious monotone and with strange irrelevance: 

“The hour is late!”

“And ’twill be later still,” replied one of the newcomers.

“Yet the cuckoo hath not called,” retorted the voice.

“Nor is the ferret on the prowl,” was the enigmatic reply.  Whereupon the voice speaking in more natural tones added sententiously: 

“Two flights of steps, and ’ware the seventeenth step on the first flight.  Door on the left, two raps, then three.”

“Thank you, friend,” rejoined one of the newcomers, “’tis pleasant to feel that so faithful a watch guards the entrance of this palace of pleasure.”

Thereupon the two visitors, who of a truth must have been guided either by instinct or by intimate knowledge of the place, for not a gleam of light illumined the entrance hall, groped their way to a flight of stone stairs which led in a steep curve to the upper floors of the house.

A rickety banister which gave ominously under the slightest pressure helped to guide the visitors in this utter darkness:  but obviously the warning uttered by that mysterious challenging voice below was not superfluous, for having carefully counted sixteen steps in an upward direction, the newcomers came to a halt, and feeling their way forward now with uttermost caution, their feet met a yawning hole, which had soon caused a serious accident to a stranger who had ventured thus far in ignorance of pitfalls.

A grim laugh, echoed by a lighter one, showed that the visitors had encountered only what they had expected, and after this brief episode they continued their journey upwards with a firmer sense of security; a smoky oil lamp on the first floor landing guided their footsteps by casting a flickering light on the narrow stairway, whereon slime and filth crept unchecked through the broken crevices between the stones.

But now as they advanced, the silence seemed more broken:  a distinct hum as of many voices was soon perceptible, and anon a shrill laugh, followed by another more deep in tone, and echoed by others which presently died away in the distance.

By the time the two men had reached the second floor landing these many noises had become more accentuated, also more distinct; still muffled and subdued as if proceeding from behind heavy doors, but nevertheless obvious as the voices of men and women in lively converse.

The newcomers gave the distinctive raps prescribed by their first mentor, on the thick panels of a solid oak door on their left.

The next moment the door itself was thrown open from within; a flood of light burst forth upon the gloomy landing from the room beyond, the babel of many voices became loud and clear, and as the two men stood for a moment beneath the lintel a veritable chorus of many exclamations greeted them from every side.