“And the cushion? Have you discovered what they placed upon it?”

“I left it in London with Dr Bond, the analyst, at Somerset House. He’s trying to discover the liquid used. I hope he will be successful, for the stuff was so potent that I have no desire for it again to be sprinkled upon my belongings.”

“They were at least ingenious,” I exclaimed, amazed at this extraordinary story, which seemed to prove so conclusively the truth of Kaye’s denunciation.

Yet I could not believe that Yolande, my charming little friend, in whom I had in the old days reposed so many confidences, and by whose side I had lingered through many idle hours in the Bois or in that almost endless forest around her feudal home, was actually a spy. The suggestion seemed too absurd. Nevertheless, Kaye was not a man to make unfounded charges, nor was Anderson given to relating that which was untrue. Truth to tell, this story of his held me absolutely dumbfounded. I recollected my conversation with her an hour ago, and the strange effect my announcement that Wolf was in Paris had made upon her. She had implored me to save her. Why?

A silence fell between us. I was preoccupied by my own thoughts. But a few moments later the Queen’s messenger again glanced at his watch, and, rising, said:

“I must be off, or I shan’t catch the Orient. Any message for them down at Constantinople?”

“No,” I responded, gripping his strong hand in farewell. “Take care of yourself, and don’t let any of those confounded spies get at you again.”

“Trust me, my dear fellow,” he laughed, and lighting another cigarette he went forth on his long journey to the East as airily as though he were strolling down to get a cocktail at Henry’s.

When he had gone I sat for a long time thinking. A remembrance of the mad love of those days that had gone came back to me, sweet, charming memories of that half-forgotten time when Yolande was my ideal, and when her lips met mine in tender, passionate caresses. Ah! how fondly I had loved her in those days! But with an effort I at last arose, and, casting all those reflections behind me with a sigh, broke the seals of the despatch-box, and, seating myself at the big writing-table, commenced to examine them with a view to ascertaining their contents.

There were several important papers, and very soon I became absorbed in them. Nearly an hour later there came a sudden rap at the door, and one of the English footmen entered, saying: