Ensconced in my armchair sat Lady Fyneshade, while on the opposite side of the room, his bony hands clasped behind his back, stood her companion Markwick.

As I entered Mabel gave vent to a cry that betrayed alarm, and rose quickly to her feet, while her companion stood staring at me open-mouthed, with an expression of mingled fear and astonishment. Both glared at me as if I were an apparition.

But only for a single instant. Markwick’s face relaxed into a forced smile, while Mabel, laughing outright, stretched forth her hand frankly, exclaiming:

“Here you are at last, Stuart! How are you?”

I greeted her rather coldly, but she chattered on, telling me that Saunders had asked them in, saying that he expected me to return every moment. They had, it seems, already waited half an hour, and were just about to depart. Few words I addressed to the man who had first led me to the mysterious house in Gloucester Square. I merely greeted him, then turned again to Mabel. The strange expression on both their faces when I had entered puzzled me. There was, I felt certain, some deep motive underlying their call.

But successfully concealing my suspicions and addressing Mabel, I said as pleasantly as I could:

“It is not often you favour me with a visit nowadays.”

“My time is unfortunately so much taken up,” she answered, with a smile. “But I wanted to see you very particularly to-day.”

“What about?” I asked, seating myself on the edge of the table, my back towards her silent escort, while she in her turn sank back into her chair.

“About Fyneshade,” she answered. “You remember all I told you on the afternoon when you called on me. Well, I have discovered he is back in London, but he has not returned home, and a letter to his club has elicited no reply.”