"There you are!" he said; "only, of course, it makes no sense." He examined it in silence, and gradually a hopeless expression effaced the animation. "How the deuce am I going to separate that mass of letters into words?" he muttered.

"This way," said the Tracer, smilingly taking the pencil from his fingers, and he wrote: I—NEVER—SAW—YOU—BUT—ONCE. I—LOVE—YOU. EDITH INWOOD.

Then he laid the pencil on the table and walked to the window.

Once or twice he fancied that he heard incoherent sounds behind him. And after a while he turned, retracing his steps leisurely. Captain Harren, extremely pink, stood tugging at his short mustache and studying the papers on the desk.

"Well?" inquired the Tracer, amused.

The young man pointed to the translation with unsteady finger. "W-what on earth does that mean?" he demanded shakily. "Who is Edith Inwood? W-what on earth does that cryptogram mean on the window pane in the photograph? How did it come there? It isn't on my window pane, you see!"

The Tracer said quietly: "That is not a photograph of your window."

"What!"

"No, Captain. Here! Look at it closely through this glass. There are sixteen small panes in that sash; now count the panes in your window—eight! Besides, look at that curtain. It is made of some figured stuff like chintz. Now, look at your own curtain yonder! It is of plain velour."

"But—but I took that photograph! She stood there—there by that very window!"