"It is all arranged," was her Highness's response. "She will remain here, poor girl, until it is safe for her to get out of Russia." Then, after some further conversation, and after my well-beloved had made signs of heartfelt gratitude to the man known from end to end of the Russian empire as "The Red Priest," the Princess turned to me, saying:

"I would much like to know what occurred before the Leithcourts left Scotland."

"The Leithcourts!" exclaimed Kampf in utter surprise. "Do you know the Leithcourts-and the English officer Durnford?"

I looked into his eyes in abject amazement. What connection could Jack Durnford, of the Marines, have with the adventurer Philip Leithcourt? I, however, recollected Jack's word, when I had described the visit of the Lola to Leghorn, and further I recollected that very shortly he would be back in London from his term of Mediterranean service.

"Well," I said after a pause, "I happen to know Captain Durnford very well, but I had no idea that he was friendly with Leithcourt."

The Red Priest smiled, stroking his white beard.

"Explain to her Highness what she desires to know, and I will tell you."

My eyes met Elma's, and I saw how intensely eager and interested she was, watching the movement of my lips and trying to make out what words I uttered.

"Well," I said, "a mysterious tragedy occurred on the edge of a wood near the house rented by Leithcourt-a tragedy which has puzzled the police to this day. An Italian named Santini and his wife were found murdered."

"Santini!" gasped Kampf, starting up. "But surely he is not dead?"

"No. That's the curious part of the affair. The man who was killed was a man disguised to represent the Italian, while the woman was actually the waiter's wife herself. I happen to know the man Santini well, for both he and his wife were for some years in my employ."

The Princess and the director of the Russian revolutionary movement exchanged quick glances. It was as though her Highness implored Kampf to reveal to me the truth, while he, on his part, was averse to doing so.

"And upon whom does suspicion rest?" asked her Highness.

"As far as I can make out, the police have no clue whatever, except one. At the spot was found a tiny miniature cross of one of the Russian orders of chivalry-the Cross of Saint Anne."

"There is no suspicion upon Leithcourt?" she asked with some undue anxiety I thought.

"No."

"Did he entertain any guests at the shooting-box?"

"A good many."

"No foreigners among them?"

"I never met any. They seemed all people from London-a smart set for the most part."

"Then why did the Leithcourts disappear so suddenly?"

"Because of the appearance of the man Chater," I replied. "It is evident that they feared him, for they took every precaution against being followed. In fact, they fled leaving a big party of friends in the house. The man Woodroffe, now at the Hotel de Paris, is a friend of Leithcourt as well as of Chater."

"He was not a guest of Leithcourt when this man representing Santini was assassinated?" asked Kampf, again stroking his beard.

"No. As soon as Woodroffe recognized me as a visitor he left-for Hamburg."

"He was afraid to face you because of the ransacking of the British Consul's safe at Leghorn," remarked the Princess, who, at the same moment, took Elma's hand tenderly in her own and looked at her. Then, turning to me, she said: "What you have told us to-night, Mr. Gregg, throws a new light upon certain incidents that had hitherto puzzled us. The mystery of it all is a great and inscrutable one-the mystery of this poor unfortunate girl, greatest of all. But both of us will endeavor to help you to elucidate it; we will help poor Elma to crush her enemies-these cowardly villains who had maimed her."

"Ah, Princess!" I cried. "If you will only help and protect her, you will be doing an act of mercy to a defenseless woman. I love her-I admit it. I have done my utmost: I have striven to solve the dark mystery, but up to the present I have been unsuccessful, and have only remained, even till to-day, the victim of circumstance."

"Let her stay with me," the kindly woman answered, smiling tenderly upon my love. "She will be safe here, and in the meantime we will endeavor to discover the real and actual truth."

And in response I took the Princess's hand and pressed it fervently. Although that striking, white-headed man and the rather stiff, formal woman in black were the leaders of the great and all-powerful movement in Russia known through the civilized world as "The Terror," yet they were nevertheless our friends. They had pledged themselves to help us thwart our enemies.

I scribbled a few hasty words upon paper and handed it to Elma. And for answer she smiled contentedly, looking into my eyes with an expression of trust, devotion and love.

A week had gone by. The Nord Express had brought me posthaste across Europe from Petersburg to Calais, and I was again in London. I had left Elma in the care of the Princess Zurloff, whom I knew would conceal her from the horde of police-agents now in search of her.

The mystery had so increased until now it had become absolutely bewildering. The more I had tried to probe it, the more inexplicable had I found it. My brain was awhirl as I sat in the wagon-lit rushing across those wide, never-ending plains that lie between the Russian capital and Berlin and the green valleys between the Rhine-lands and the sea. The maze of mystery rendered me utterly incapable of grasping one solid tangible fact, so closely interwoven was each incident of the strange life-drama in which, through mere chance, I was now playing a leading part. I was aware of one fact only, that I loved Elma with all my soul, even though I knew not whom she really was-or her strange life story. Her sweet face, with those soft, brown eyes, so tender and intense, stood out ever before me, sleeping or waking. Each moment as the express rushed south increased the distance between us, yet was I not on my way back to England with a clear and distinct purpose? I snatched at any clue, however small, with desperate eagerness, as a drowning man clutches at a straw.

The spy from Abo had seen me on the railway platform on my departure from Petersburg. He had overheard me buy a ticket for London, and previous to stepping into the train I had smiled at him in glad triumph. My journey was too long a one for him to follow, and I knew that I had at last outwitted him. He had expected to see Elma with me, no doubt, and his disappointment was plainly marked. But of Woodroffe I had neither seen nor heard anything.

It was a cold but dry November night in London, and I sat dining with Jack Durnford at a small table in the big, well-lit room of the Junior United Service Club. Easy-going and merry as of old, my friend was bubbling over with good spirits, delighted to be back again in town after three years sailing up and down the Mediterranean, from Gib. to Smyrna, maneuvering always, yet with never a chance of a fight. His well-shaven face bore the mark of the southern suns, and the backs of his hands were tanned by the heat and the sea. He was, indeed, as smart an officer as any at the Junior, for the Marines are proverbial for their neatness, and his men on board the Bulwark had received many a pleasing compliment from the Admiral.

"Glad to be back!" he exclaimed, as he helped himself to a "peg." "I should rather think so, old chap. You know how awfully wearying the life becomes out there. Lots going on down at Palermo, Malta, Monte Carlo, or over at Algiers, and yet we can never get a chance of it. We're always in sight of the gay places, and never land. I don't blame the youngsters for getting off from Leghorn for two days over here in town when they can. Three years is a bigger slice out of a fellow's life than anyone would suppose. But, by the way, I saw Hutcheson the other day. We put into Spezia, and he came out to see the Admiral-got despatches for him, I think. He seems as gay as ever. He lunched at mess, and said how sorry he was you'd deserted Leghorn."