Yolande was suspected of being a spy! The thought seemed absolutely absurd. She was Belgian, it was true, and there is somehow always a prejudice against Belgian women in Paris, due perhaps to the fact that although they speak French with an accent, they are often perfect linguists. But for Yolande to be actually a spy—why, the thing was ridiculous!

Arrived at my own rooms, I found Mackenzie, my old Scotch manservant, awaiting me.

“Mr Kaye called, sir, half an hour ago,” he said. “He could not wait, for he was leaving Paris.”

“Leaving Paris?” I echoed, for the ubiquitous chief of the secret service had only come back from Madrid a few hours before.

“Yes, sir. He left you a note;” and my well-trained man drew a letter from his pocket. He always kept my letters upon his person, in order that any callers might not pry into them during my absence.

I tore open the note eagerly, and read the few scribbled lines. Next instant the paper almost fell from my fingers. I held my breath, scarcely believing my own eyes. Yet the writing was plain enough, and was as follows:

Within the past hour I have ascertained that your friend Yolande de Foville is a secret agent. Keep strict watch upon her. I have left instructions that if she leaves Paris she is to be followed. I go to Berlin at once to make inquiries, and am leaving by the 4:30 train this morning. I have the address you gave, and the particulars concerning her. Shall return as soon as possible.

“K.”

I crushed the note in my hand, and, walking on into my sitting-room, gulped down some brandy. Everything had conspired against me. When I had given Kaye those details concerning my charming little friend three years ago, I had never dreamed that he would register them and afterwards use them in an endeavour to fasten upon her a charge of being a spy. Yet he was actually on his way to Berlin, and any attempt upon my part to hinder him would only be misconstrued into a treasonable endeavour to shield her.

Upon the table before me stood her photograph in a silver frame, looking out at me. I took it up. Those eyes were so innocent that I could not bring myself to believe that any evil lurked in them. Surely she would not attempt to harm me? Such an action was absolutely contrary to any woman’s nature.