“You have solved the puzzle, Baron,” he said, gravely. “Now tell me the one thing. Your story seems to dovetail everywhere.”

“The one thing,” Peter said, “is connected with the Duchesse. It was she, of her own will, who decided to come to America. I believe that, but for her coming, Bernadine and the Prince would have waited in their own country. Money can flash from America to England over the wires. It does not need to be fetched. They have still one fear. It is connected with the Duchesse. Let me think.”

They walked up and down the deck. The lights were extinguished one by one, except in the smoking-room. A strange breed of sailors from the lower deck came up with mops and buckets. The wind changed its quarter and the great ship began to roll. Peter stopped abruptly.

“I find this motion most unpleasant,” he said. “I am going to bed. To-night I cannot think. To-morrow, I promise you, we will solve this. Hush!”

He held out his hand and drew his companion back into the shadow of a lifeboat. A tall figure was approaching them along the deck. As he passed the little ray of light thrown out from the smoking-room, the man’s features were clearly visible. It was the Prince. He was walking like one absorbed in thought. His eyes were set like a sleep-walker’s. With one hand he gesticulated. The fingers of the other were twitching all the time. His head was lifted to the skies. There was something in his face which redeemed it from its disfiguring petulance.

“It is the man who dreams of power,” Peter whispered. “It is one of his best moments, this. He forgets the vulgar means by which he intends to rise. He thinks only of himself, the dictator, king, perhaps emperor. He is of the breed of egoists.”

Again and again the Prince passed, manifestly unconscious even of his whereabouts. Peter and Sogrange crept away unseen to their staterooms.

In many respects the room resembled a miniature court of justice. The principal sitting-room of the royal suite, which was the chief glory of the Adriatic, had been stripped of every superfluous article of furniture or embellishment. Curtains had been removed, all evidences of luxury disposed of. Temporarily the apartment had been transformed into a bare, cheerless place. Seated on a high chair, with his back to the wall, was Sirdeller. At his right hand was a small table, on which stood a glass of milk, a phial, a stethoscope. Behind his doctor. At his left hand a smooth-faced, silent young man—his secretary. Before him stood the Duchesse, Peter and Sogrange. Guarding the door was one of the watchmen, who, from his great physique, might well have been a policeman out of livery. Sirdeller himself, in the clear light which streamed through the large window, seemed more aged and shrunken than ever. His eyes were deep set. No tinge of color was visible in his cheeks. His chin protruded, his shaggy gray eyebrows gave him an unkempt appearance. He wore a black velvet gown, a strangely cut black morning coat and trousers, felt slippers, and his hands were clasped upon a stout ash walking-stick. He eyed the newcomers keenly but without expression.

“The lady may sit,” he said.

He spoke almost in an undertone, as though anxious to avoid the fatigue of words. The guardian of the door placed a chair, into which the Duchesse subsided. Sirdeller held his right hand towards his doctor, who felt his pulse. All the time Sirdeller watched him, his lips a little parted, a world of hungry excitement in his eyes. The doctor closed his watch with a snap and whispered something in Sirdeller’s ear, apparently reassuring.