"Mr. Holmes——!"

"My dear sir, there is no mystery. Your letter came with that heading, and as you fixed this appointment in very pressing terms it was clear that something sudden and important had occurred."

"Yes, indeed. But the letter was written in the afternoon, and a good deal has happened since then. If Colonel Emsworth had not kicked me out——"

"Kicked you out!"

"Well, that was what it amounted to. He is a hard nail, is Colonel Emsworth. The greatest martinet in the Army in his day, and it was a day of rough language, too. I couldn't have stuck the Colonel if it had not been for Godfrey's sake."

I lit my pipe and leaned back in my chair.

"Perhaps you will explain what you are talking about."

My client grinned mischievously.

"I had got into the way of supposing that you knew everything without being told," said he. "But I will give you the facts, and I hope to God that you will be able to tell me what they mean. I've been awake all night puzzling my brain, and the more I think the more incredible does it become.

"When I joined up in January, 1901—just two years ago—young Godfrey Emsworth had joined the same squadron. He was Colonel Emsworth's only son—Emsworth, the Crimean V.C.—and he had the fighting blood in him, so it is no wonder he volunteered. There was not a finer lad in the regiment. We formed a friendship—the sort of friendship which can only be made when one lives the same life and shares the same joys and sorrows. He was my mate—and that means a good deal in the Army. We took the rough and the smooth together for a year of hard fighting. Then he was hit with a bullet from an elephant gun in the action near Diamond Hill outside Pretoria. I got one letter from the hospital at Cape Town and one from Southampton. Since then not a word—not one word, Mr. Holmes, for six months and more, and he my closest pal.