“Well, now, how do you guess that?” and Mr. Talcott looked decidedly interested.

“Like most of those spectacular deductions,” I responded, “the explanation takes all the charm out of it. There is a carriage check on the desk,—one of those queer cards with a lot of circular holes in it. That must have been given to Mr. Gately when he left his car, or perhaps a taxicab, outside of some hotel or shop. As he didn’t give it up, the chauffeur must have waited for him until he was tired.”

“He may have gone off with some friend, and sent word to the man not to wait,” offered Talcott.

“But then he would have sent the call-check out to identify him. What a queer-looking thing it is,” and I picked up the card, with its seven round holes in a cabalistic array.

“Perhaps the caller left it,” spoke up Norah; “perhaps he, or she, came here in a cab, or a car, and——”

“No, Norah,” I said, “such checks are not given out at a building of this sort. Only at hotels, theaters, or shops.”

“It’s of no importance,” and Mr. Talcott gave a slight shrug of impatience; “the thing is, where is Mr. Gately?”

Restless and unable to sit still, I wandered into the third room. I had heard of this sanctum, but I had never expected to see inside of it. The impulse came to me now to make the most of this chance, for when Mr. Gately returned I might be summarily, if courteously, ejected.

The effect of the room was that of dignified splendor. It had evidently been done but not overdone by a decorator who was a true artist. The predominant color was a soft, deep blue, and the rugs and textile fabrics were rich and luxurious. There were a few fine paintings in gold frames and the large war map occupied the greater part of a paneled wall space. The chairs were spacious and cushioned, and a huge davenport stood in front of a wide fireplace, where some logs were cheerily burning.

A cozy place to entertain friends, I ruminated, and then, turning back to the middle room, I reconstructed the movements of the two people I had seen shadowed.