"I have heard, I have heard," she whispered. "Ah Tsong has told me."

The pupils of her eyes dilated, as she fixed an appealing glance upon the Inspector.

In justice to the latter he was palpably abashed by the delicate beauty of the girl who stood before him, by her naivete, and by that childishness of appearance and manner which must have awakened the latent chivalry in almost any man's heart.

"I am sorry to have to trouble you with this disagreeable business, Mrs. Camber," he began; "but I believe you were awakened last night by the sound of a shot."

"Yes," she replied, watching him intently, "that is so."

"May I ask at what time this was heard?"

"Ah Tsong told me it was after twelve o'clock."

"Was the sound a loud one?"

"Yes. It must have been to have awakened me."

"I see. Did you think it was in the house?"

"Oh, no."

"In the garden?"

"I really could not say, but I think that it was farther away than that."

"And what did you do?"

"I rang the bell for Ah Tsong."

"Did he come immediately?"

"Almost immediately."

"He was dressed, then?"

"No, I don't think he was. He had quickly put on an overcoat. He usually answers at once, when I ring for him, you see."

"I see. What did you do then?"

"Well, I was frightened, you understand, and I told him to find out if all was well with my husband. He came back and told me that Colin was writing. But the sound had alarmed me very much."

"Oh, and now perhaps you will tell me, Mrs. Camber, when and where your husband first met Colonel Menendez?"

Every vestige of colour fled from the girl's face.

"So far as I know-they never met," she replied, haltingly.

"Could you swear to that?"

"Yes."

I think that hitherto she had not fully realized the nature of the situation; but now something in the Inspector's voice, or perhaps in our glances, told her the truth. She moved to where Colin Camber was sitting, looking down at him questioningly, pitifully. He put his arm about her and drew her close.

Inspector Aylesbury cleared his throat and returned his note-book to his pocket.

"I am going to take a look around the garden," he announced.

My respect for him increased slightly, and Harley and I followed him out of the study. A police sergeant was sitting in the hall, and Ah Tsong was standing just outside the door.

"Show me the way to the garden," directed the Inspector.

Ah Tsong stared stupidly, whereupon Paul Harley addressed him in his native language, rapidly and in a low voice, in order, as I divined, that the Inspector should not hear him.

"I feel dreadfully guilty, Knox," he confessed, in a murmured aside. "For any Englishman, fict.i.tious characters excepted, to possess a knowledge of Chinese is almost indecent."

Presently, then, I found myself once more in that unkempt garden of which I retained such unpleasant memories.

Inspector Aylesbury stared all about and up at the back of the house, humming to himself and generally behaving as though he were alone. Before the little summer study he stood still, and:

"Oh, I see," he muttered.

What he had seen was painfully evident. The right-hand window, beneath which there was a permanent wooden seat, commanded an un.o.bstructed view of the Tudor garden in the grounds of Cray's Folly. Clearly I could detect the speck of high-light upon the top of the sun-dial.

The Inspector stepped into the hut. It contained a bookshelf upon which a number of books remained, a table and a chair, with some few other dilapidated appointments. I glanced at Harley and saw that he was staring as if hypnotized at the prospect in the valley below. I observed a constable on duty at the top of the steps which led down into the Tudor garden, but I could see nothing to account for Harley's fixed regard, until:

"Pardon me one moment, Inspector," he muttered, brusquely.

Brushing past the indignant Aylesbury, who was examining the contents of the shelves in the hut, he knelt upon the wooden seat and stared intently through the open window.

"One-two-three-four-five-six-seven," he chanted. "Good! That will settle it."

"Oh, I see," said Inspector Aylesbury, standing strictly upright, his prominent eyes turned in the direction of the kneeling Harley. "One, two, three, four, and so on will settle it, eh? If you don't mind me saying so, it was settled already."

"Yes?" replied Harley, standing up, and I saw that his eyes were very bright and that his face was slightly flushed. "You think the case is so simple as that?"

"Simple?" exclaimed the Inspector. "It's the most cunning thing that was ever planned, but I flatter myself that I have a good straight eye which can see a fairly long way."

"Excellent," murmured Harley. "I congratulate you. Myopia is so common in the present generation. You have decided, of course, that the murder was committed by Ah Tsong?"

Inspector Aylesbury's eyes seemed to protrude extraordinarily.

"Ah Tsong!" he exclaimed. "Ah Tsong!"

"Surely it is palpable," continued Harley, "that of the three people residing in the Guest House, Ah Tsong is the only one who could possibly have done the deed."

"Who could possibly-who could possibly--" stuttered the Inspector, then paused because of sheer lack of words.

"Review the evidence," continued Harley, coolly. "Mrs. Camber was awakened by the sound of a shot. She immediately rang for Ah Tsong. There was a short interval before Ah Tsong appeared-and when he did appear he was wearing an overcoat. Note this point, Inspector: wearing an overcoat. He descended to the study and found Mr. Camber writing. Now, Ah Tsong sleeps in a room adjoining the kitchen on the ground floor. We pa.s.sed his quarters on our way to the garden a moment ago. Of course, you had noted this? Mr. Camber is therefore eliminated from our list of suspects."