"Well, that's wise," said I, "and I'll look in and see how you go on when my watch is over."

He started, turned half-way to me and stopped. "Right you are," he said, with a struggle after cheerfulness. His back was still to me. He had degrading cowardice in his very appearance. Somehow I was moved to pat him on the shoulder.

"That's all right, man. Get to sleep."

For answer he broke into tears and blubbered aloud, throwing himself face downwards on his bunk.

"Come, Pye!" said I. "Why, what's this, man?"

"I'm a bit upset," he said, regaining some control of himself. "I think the sea-sickness has upset me. But I'm all right." He lay on his face, and was silent. And so (for I was due now in the corridor) I left him. As I turned away, I could have sworn I heard the key click in the door. He had locked himself in again.

Lane was on duty at the farther end of the corridor, and I had the door near the entrance connecting with the music balcony. Two electric lights shed a faint glow through the length and breadth of the corridor, and over all was silence. As I sat in my chair, fingering my revolver, my thoughts turned over the situation helplessly, and swung round finally to the problem of Barraclough and Mademoiselle. The Princess and I had guessed what was forward, and Lane also had an inkling. Only the Prince was ignorant of the signal flirtation which was in progress under his nose. I suppose such a woman could not remain without victims. It did not suffice for her that she had captured a prince of the blood, had dislocated the policy of a kingdom, and had ruined a man's life. She must have other trophies of her beauty, and Barraclough was one. I was sorry for him, though I cannot say that I liked him. The dull, unimaginative and wholesome Briton had toppled over before the sensuous arts of the French beauty. His anxiety was for her. He had not shown himself timorous as to the result before. Doubtless she had infected him with her fears. Possibly, even, it was at the lady's suggestion that he had made advances to Holgate.

Suddenly my thoughts were diverted by a slight noise, and, looking round, I saw Lane advancing swiftly towards me.

"I say, Phillimore," he said in a hoarse whisper, "I've lost the key."

"Key!" I echoed. "What key?" For I did not at once take in his meaning.