The pair had, without doubt, watched Muriel and myself, and as soon as we had gone they had returned and carried off the ghastly remains of the poor woman who had been so foully done to death.

But who were the men-the fellow with the broad shoulders whom Muriel recognized, and the slim seafarer in his pilot-coat and peaked cap? The enigma each hour became more and more inscrutable.

At dawn Mackenzie, with four of his men, made a thorough examination of the wood, but although they continued until dusk they discovered nothing, neither was anything heard of the mysterious seafarer and his companion in brown tweeds.

I called on Muriel as arranged, and explained how the body had so suddenly disappeared, whereupon she stared at me pale-faced, saying-

"The assassins must have watched us! They are aware, then, that we have knowledge of their crime?"

"Of course," I said.

"Ah!" she cried hoarsely. "Then we are both in deadly peril-peril of our own lives! These people will hesitate at nothing. Both you and I are marked down by them, without a doubt. We must both be wary not to fall into any trap they may lay for us."

Her very words seemed an admission that she was aware of the identity of the conspirators, and yet she would give me no clue to them.

We went out and up the drive together to the kennels, where her father, a tall, imposing figure in his shooting-kit, was giving orders to the keepers.

"Hulloa, Gregg!" he cried merrily, extending his hand. "You'll make one of a party to Glenlea to-morrow, won't you? Paton and Phillips are coming. Ten sharp here, and the ladies are coming out to lunch with us."

"Thanks," I said, accepting with pleasure, for by so doing I saw that I might be afforded an opportunity of being near Muriel. The fact that the assassins were aware of our knowledge seemed to have caused her the greatest apprehension lest evil should befall us. Then, as we turned away to go back to the house, Leithcourt said to me-

"You know all about the discovery up at the wood the other day! Horrible affair-a young foreigner found murdered."

"Yes. I've heard about it," I responded.

"And the police are worse than useless," he declared with disgust. "They haven't discovered who the fellow is yet. Why, if it had happened anywhere else but in Scotland, they'd have arrested the assassin before this."

"He's an entire stranger, I hear," I remarked. And then added: "You often go up to the wood of an evening after pigeons. It's fortunate you were not there that evening, eh?"

He glanced at me quickly with his brows slightly contracted, as though he did not exactly comprehend me. In an instant I saw that my remark had caused him quick apprehension.

"Yes," he answered with a sickly smile which he intended should convey to me utter unconcern. "They might have suspected me."

"It certainly is a disagreeable affair to happen on one's property." I said, still watching him narrowly. And then Muriel at his side managed with her feminine ingenuity to divert the conversation into a different channel.

Next day I accompanied the party over to Glenlea, about five miles distant, and at noon at a spot previously arranged, we found the ladies awaiting us with luncheon spread under the trees. As soon as we approached Muriel came forward quickly, handing me a telegram, saying that it had been sent over by one of my uncle's grooms at the moment they were leaving the castle.

I tore it open eagerly, and read its contents. Then, turning to my companions, said in as quiet a voice as I could command-

"I must go up to London to-night," whereat the men, one and all, expressed hope that I should soon return. Leithcourt's party were a friendly set, and at heart I was sorry to leave Scotland. Yet the telegram made it imperative, for it was from Frank Hutcheson in Leghorn, and read-

"Made inquiries. Olinto Santini married your servant Armida at Italian Consulate-General in London about a year ago. They live 64B, Albany Road, Camberwell: he is employed waiter Ferrari's Restaurant, Westbourne Grove.-British Consulate, Leghorn"

The lunch was a merry one, as shooting luncheons usually are, and while we ate the keepers packed our morning bag-a considerable one-into the Perth-cart in waiting. Then, when we could wander away alone together, I explained to Muriel that the reason of my sudden journey to London was in order to continue my investigations regarding the mysterious affair.

This puzzled her, for I had not, of course, revealed to her that I had identified Olinto. Yet I managed to make such excuses and promises to return that I think allayed all her suspicions, and that night, after calling upon the detective Mackenzie, I took the sleeping-car express to Euston.

The restaurant which Hutcheson had indicated was, I found, situated about half-way up Westbourne Grove, nearly opposite Whiteley's, a small place where confectionery and sweets were displayed in the window, together with long-necked flasks of Italian chianti, chump-chops, small joints and tomatoes. It was soon after nine o'clock when I entered the long shop with its rows of marble-topped tables and greasy lounges of red plush. An unhealthy-looking lad was sweeping out the place with wet saw-dust, and a big, dark-bearded, flabby-faced man in shirt-sleeves stood behind the small counter polishing some forks.

"I wish to see Signor Ferrari," I said, addressing him.

"There is no Ferrari, he is dead," responded the man in broken English. "My name is Odinzoff. I bought the place from madame."

"You are Russian, I presume?"

"Polish, m'sieur-from Varsovie."

I had seen from the first moment we had met that he was no Italian. He was too bulky, and his face too broad and flat.

"I have come to inquire after a waiter you have in your service, an Italian named Santini. He was my servant for some years, and I naturally take an interest in him."

"Santini?" he repeated. "Oh I you mean Olinto? He is not here yet. He comes at ten o'clock."

This reply surprised me. I had expected the restaurant-keeper to express regret at his disappearance, yet he spoke as though he had been at work as usual on the previous day.

"May I have a liqueur brandy?" I asked, seeing that I would be compelled to take something. "Perhaps you will have one with me?"

"Ach no! But a kьmmel-yes, I will have a kьmmel!" And he filled our glasses, and tossed off his own at a single gulp, smacking his lips after it, for the average Russian dearly loves his national decoction of caraway seeds.

"You find Olinto a good servant, I suppose?" I said, for want of something else to say.

"Excellent. The Italians are the best waiters in the world. I am Russian, but dare not employ a Russian waiter. These English would not come to my shop if I did."

I looked around, and it struck me that the trade of the place mainly consisted in chops and steaks for chance customers at mid-day, and tea and cake for those swarms of women who each afternoon buzz around that long line of windows of the "world's provider." I could see that his was a cheap trade, as revealed by the printed notice stuck upon one of the long fly-blown mirrors: "Ices 4d and 6d."

"How long has Olinto been with you?" I inquired.

"About a year-perhaps a little more. I trust him implicitly, and I leave him in charge when I go away for holidays. He does not get along very well with the cook-who is Milanese. These Italians from different provinces always quarrel," he added, laughing. "If you live in Italy you know that, no doubt."

I laughed in chorus, and then glancing at my watch, said: "I'll wait for him, if he will be here at ten. I'd much like to see him again."

The Russian was by no means nonplused, but merely remarked-

"He is late sometimes, but not often. He lives on the other side of London-over at Camberwell." His confidence that the waiter would return struck me as extremely curious; nevertheless I possessed myself in patience, strolled up and down the restaurant, and then stood watching the traffic in the Grove outside.