“When a gentleman of virile appearance enters my room with such tan upon his face as an English sun could never give, and with his handkerchief in his sleeve instead of in his pocket, it is not difficult to place him. You wear a short beard, which shows that you were not a regular. You have the cut of a riding-man. As to Middlesex, your card has already shown me that you are a stockbroker from Throgmorton Street. What other regiment would you join?”

“You see everything.”

“I see no more than you, but I have trained myself to notice what I see. However, Mr. Dodd, it was not to discuss the science of observation that you called upon me this morning. What has been happening at Tuxbury Old Park?”

“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.

“Well, when the war was over, and we all got back, I wrote to his father and asked where Godfrey was. No answer. I waited a bit and then I wrote again. This time I had a reply, short and gruff. Godfrey had gone on a voyage round the world, and it was not likely that he would be back for a year. That was all.