realize that with all his care in using typewriters and telephones, some kind of record of his extortion had been obtained.
For a moment he crumpled up. Then Kennedy seized him by the elbow, dragging him toward a side door opposite that at which our cab was standing.
"I mean," he muttered, "that I have the goods on you at last and you'll get the limit for blackmail through this little wax cylinder if you so much as show your face in New York again. I don't care where you go, but it must be by the first train. Understand?"
A moment later we returned to the cab, where it had pulled up in the shadow, away from the carriage entrance.
"You—you'll forgive me—for my—unjust suspicions—Agatha?" we heard a voice from the depths of the cab say.
Kennedy pulled me back in time not to interrupt a muffled "Yes."
Craig coughed.
As he reached a hand in through the cab door to bid good-night to the reunited couple, I saw Mrs. Seabury start, then turn and drop into her handbag the key which Kennedy had extracted from Sherburne's pocket in the mêlée and now conveyed back to her in the handshake.
Chapter VII
The Diamond Queen
"Meet Sylvania Quarantine midnight. Strange death Rawaruska. Retain you in interest steamship company. Thompson, Purser."
Kennedy had torn open the envelope of a wireless message that had come from somewhere out in the Atlantic and had just been delivered to him at dinner one evening. He read it quickly and tossed it over to me.
"Rawaruska," I repeated. "Do you suppose that means the clever little Russian dancer who was in the 'Revue' last year?"
"There could hardly be two of that unusual name who would be referred to so familiarly," returned Craig. "Curious that we've had nothing in the wireless news about it."
"Perhaps it has been delayed," I suggested. "Let me ring up the Star. They may have something now."
A few minutes later I rejoined Craig at the table. A report had just been received that Rawaruska had been discovered, late the night before, unconscious in her room on the Sylvania. The ship's surgeon had been summoned, but before he was able to do anything for her she died. That was all the report said. It was meager, but it served to excite our interest.
Renée Rawaruska, I knew, was a popular little Russian dancer abroad who had come to America the season previous and had made a big hit on Broadway. Beautiful, strange, fiery, she incarnated the mysterious Slav. I knew her to be one of those Russian dancers before whose performances Parisian audiences had gone wild with admiration, one who had carried her art beyond anything known in other countries, fascinating, subtle.
Hastily over the telephone Kennedy made arrangements to go down to Quarantine on a revenue tug that was leaving to meet the Sylvania.
It was a weird trip through the choppy winter seas of the upper bay and the Narrows, in the dark, with the wind cold and bleak.
The tug had scarcely cast off from the Battery, where we met it, when a man, who had been watching us from a crevice of his turned-up ulster collar, quietly edged over.
"You are Professor Kennedy, the detective?" he began, more as if asserting it than asking the question.
Craig eyed him a moment, but said nothing.
"I understand," he went on, not waiting for a reply, "that you are interested in the case of that little Russian actress, Rawaruska?"
Still Kennedy said nothing.
"My name is Wade—of the Customs Service," pursued the man, nothing abashed. Sticking his head forward between the corners of his high collar he added, in a lowered voice, "You have heard, I suppose, of the great amber diamond, 'The Invincible'?"
Kennedy nodded and I thought hurriedly of all the big stones I had ever heard—the Pitt, the Orloff, the Koh-i-noor, the Star of the South, the Cullinan, and others.
"The Invincible, you know," he added, "is the largest amber diamond in the world, almost the size of the famous Cullinan, over three hundred carats. It was found in the dry diggings of the Vaal River, a few miles from Kimberley. The dry diggings are independent of the De Beers combine, of course. Well, its owner has always been in the position of Mark Twain's man with the million-dollar bank-note who found it too large to cash. No one knows just what an amber diamond of that size is really worth. This one is almost perfect, resembles the huge top of a decanter stopper. It's a beautiful orange color and has been estimated at—well, as high as close to a quarter of a million, though, as I said, that is all guesswork."
"Yes?" remarked Kennedy, more for politeness than anything else.
Wade leaned over closer.
"The Invincible," he whispered, shielding his lips from the keen, biting gale, "was last known to belong to the De Guerres, of Antwerp. One of my special agents abroad has cabled me to look out for it. He thinks there is reason to believe it will be smuggled into America for safe keeping during the troubles in Belgium."
It seemed to make no difference to the customs man that Kennedy did not exactly welcome him with open arms. "The De Guerres are well-known dealers in diamonds, one of the leading houses in the 'city of diamonds,' as Antwerp has been called. One of the De Guerres is on the Sylvania, the junior partner—" he paused, then added,—"the husband, I believe, of Rawaruska. I thought perhaps you might be willing to try to help me."
"I should be glad to," replied Kennedy tersely, pondering what the officer had told us.
Nothing more was said on the trip and at last we came to the Sylvania, lying grim and dark of hull off the little cluster of Quarantine buildings, with myriads of twinkling lights on her, far above but scarcely relieving the blackness of the leviathan form.
Thompson, the purser, a quiet, unexcitable Englishman, met us as we came over the side, and for the moment we lost sight of our new-found friend, Wade.
"Perhaps you didn't know it," informed Thompson as we made our way through the ship, "but Rawaruska was married—had been for some time."
"Who was her husband?" queried Kennedy, seeking confirmation of what we had already heard.
"Armand De Guerre, a Belgian, of Antwerp," was the reply, "one of the partners in a famous old diamond-cutting firm of that city."
Kennedy looked at the purser keenly for a moment, then asked, "Were they traveling together?"
"Oh, yes,—that is, he had engaged a room, but you know how crowded the boats are with refugees fleeing to America from the war. He gave up his room, or rather his share of it, to a woman, a professional saleswoman, well known, I believe, in Antwerp as well as the Rue de la Paix in Paris and Maiden Lane and Fifth Avenue of your city, a Miss Hoffman—Elsa Hoffman. She shared the room with Rawaruska, while De Guerre took his chances in the steerage."
As we walked down one of the main corridors we noticed ahead of us a seemingly very nervous and excited gentleman
