perceiving that the time was fast speeding by, strolled over to the tavern for my supper.

The stranger was still there, walking up and down the sitting-room. He joined us at the table, but I observed he scarcely tasted his food, and both then and afterward manifested the same anxious suspense that had characterized his movements from the time of our first encounter.

II.

THE BLACK DOMINO.

At half past eight I was at my post. The mysterious stranger, still under my direct surveillance, had already entered the grounds and taken his stand in the southwest corner of the shrubbery, thereby leaving me free to exercise my zeal in keeping the fences and gates free of intruders. At nine the guests were nearly if not all assembled; and promptly at the hour mentioned in the note so often referred to, I stole away from my post and hid myself amid the bushes that obscured the real place of rendezvous.

It was a retired spot, eminently fitted for a secret meeting. The lamps, which had been hung in profusion through the grounds, had been studiously excluded from this quarter. Even the broad blaze of light that poured from the open doors and windows of the brilliantly illuminated mansion, sent no glimmer through the broad belt of evergreens that separated this retreat from the open lawn beyond. All was dark, all was mysterious, all was favorable to the daring plan I had undertaken. In silence I awaited the sound of approaching steps.

My suspense was of short duration. In a few moments I heard a low rustle in the bushes near me, then a form appeared before my eyes, and a man's voice whispered:

"Is there any one here?"

My reply was to glide quietly into view.

Instantly he spoke again, this time with more assurance.

"Are you ready for a counterfeit?"

"I am ready for any thing," I returned, in smothered tones, hoping by thus disguising my voice, to lure him into a revelation of the true purpose of this mysterious rendezvous.

But instead of the explanations I expected, the person before me made a quick movement, and I felt a domino thrown over my shoulders.

"Draw it about you well," he murmured; "there are lynx eyes in the crowd to-night." And while I mechanically obeyed, he bent down to my ear and earnestly continued: "Now listen, and be guided by my instructions. You will not be able to enter by the front door, as it is guarded, and you cannot pass without removing your mask. But the window on the left-hand balcony is at your service. It is open, and the man appointed to keep intruders away, has been bribed to let you pass. Once inside the house, join the company sans céremonie; and do not hesitate to converse with any one who addresses you by the countersign. Promptly at ten o'clock look around you for a domino in plain black. When you see him move, follow him, but with discretion, so that you may not seem to others to be following. Sooner or later he will pause and point to a closed door. Notice that door, and when your guide has disappeared, approach and enter it without fear or hesitation. You will find yourself in a small apartment connecting with the library.

"There is but one thing more to say. If the wineglass you will observe on the library table smells of wine, you may know your father has had his nightly potion and gone to bed. But if it contains nothing more than a small white powder, you may be certain he has yet to return to the library, and that by waiting, you will have the long-wished-for opportunity of seeing him."

And pausing for no reply, my strange companion suddenly thrust a mask into my hand and darted from the circle of trees that surrounded us.

For a moment I stood dumbfounded at the position in which my recklessness had placed me. All the folly, the impertinence even, of the proceeding upon which I had entered, was revealed to me in its true colors, and I mentally inquired what could have induced me to thus hamper myself with the details of a mystery so entirely removed from the serious matter I had in charge. Resolved to abandon the affair, I made a hasty attempt to disengage myself from the domino in which I had been so unceremoniously enveloped. But invisible hands seemed to restrain me. A vivid remembrance of the tone in which these final instructions had been uttered returned to my mind, and while I recognized the voice as that of Hartley Benson, I also recognized the almost saturnine intensity of expression which had once before imbued his words with a significance both forcible and surprising. The secret, if a purely family one, was of no ordinary nature; and at the thought I felt my old interest revive. All the excuses with which I had hitherto silenced my conscience recurred to me with fresh force, and mechanically donning my mask, I prepared to follow out my guide's instructions to the last detail.

The window to which I had been directed stood wide open. Through it came the murmur of music and the hum of gay voices. Visions of a motley crowd decked in grotesque costumes passed constantly before my eyes. Sight and sound combined to allure me. Hurrying to the window, I stepped carelessly in.

A low guttural "Hugh!" at once greeted me. It was from a mask in full Indian costume, whom I saw leaning with a warrior's well-known dignity against the embrasure of the window by which I had entered. Giving him a scrutinizing glance, I came to the conclusion he was a young and not inelegant man; and impelled by a reasonable curiosity as to how I looked myself, I cast my eyes down upon my own person. I found my appearance sufficiently striking. The domino, in which I was wrapped was of a brilliant yellow hue, covered here and there with black figures representing all sorts of fantastic creatures, from hobgoblins of a terrible type, to merry Kate Greenaway silhouettes. "Humph!" thought I, "it seems I am not destined to glide unnoticed amid the crowd."

The first person who approached me was a gay little shepherdess.

"Ah, ha!" was the sportive exclamation with which she greeted me. "Here is one of my wandering sheep!" And with a laugh, she endeavored to hook me to her side by means of her silver crook.

But this blithesome puppet possessed no interest for me. So with a growl and a bound I assured her I was nothing more than a wolf in sheep's clothing, and would eat her up if she did not run away; at which she gayly laughed and vanished, and for a moment I was left alone. But only for a moment. A masked lady, whom I had previously observed standing upright and solitary in a distant corner of the room, now approached, and taking me by the arm, led me eagerly to one side.

"Oh, Joe!" she whispered, "is it you? How glad I am to have you here, and how I hope we are going to be happy at last!"

Fearing to address a person seemingly so well acquainted with the young man whose place I had usurped, I merely pressed, with most perfidious duplicity, the little hand that was so confidingly clasped in mine. It seemed to satisfy her, for she launched at once into ardent speech.

"Oh, Joe, I have been so anxious to have you with us once again! Hartley is a good brother, but he is not my old playmate. Then father will be so much happier if you only succeed in making him forget the past."

Seeing by this that it was Miss Carrie Benson with whom I had to deal, I pressed the little hand again, and tenderly drew her closer to my side. That I felt all the time like a villain of the blackest dye, it is quite unnecessary for me to state.

"Has Hartley told you just what you are to do?" was her next remark.