most imperfect account of the matter reached the London Press. Now, after thirteen years, I will give the true details of this inconceivable affair to the public.

I have said that scattered towers marked the villages which dotted this part of Cornwall. The nearest of these was the hamlet of Tredannick Wollas, where the cottages of a couple of hundred inhabitants clustered round an ancient, moss-grown church. The vicar of the parish, Mr Roundhay, was something of an archaeologist, and as such Holmes had made his acquaintance. He was a middle-aged man, portly and affable, with a considerable fund of local lore. At his invitation we had taken tea at the vicarage, and had come to know, also, Mr Mortimer Tregennis, an independent gentleman, who increased the clergyman’s scanty resources by taking rooms in his large, straggling house. The vicar, being a bachelor, was glad to come to such an arrangement, though he had little in common with his lodger, who was a thin, dark, spectacled man, with a stoop which gave the impression of actual physical deformity. I remember that during our short visit we found the vicar garrulous, but his lodger strangely reticent, a sadfaced, introspective man, sitting with averted eyes, brooding apparently upon his own affairs.

These were the two men who entered abruptly into our little sitting-room on Tuesday, March the 16th, shortly after our breakfast hour, as we were smoking together, preparatory to our daily excursion upon the moors.

‘Mr Holmes,’ said the vicar, in an agitated voice, ‘the most extraordinary and tragic affair has occurred during the night. It is the most unheard-of business. We can only regard it as a special Providence that you should chance to be here at the time, for in all England you are the one man we need.’

I glared at the intrusive vicar with no very friendly eyes; but Holmes took his pipe from his lips and sat up in his chair like an old hound who hears the view-hallo. He waved his hand to the sofa, and our palpitating visitor with his agitated companion sat side by side upon it. Mr Mortimer Tregennis was more self-contained than the clergyman, but the twitching of his thin hands and the brightness of his dark eyes showed that they shared a common emotion.

‘Shall I speak or you?’ he asked of the vicar.

‘Well, as you seem to have made the discovery, whatever it may be, and the vicar to have had it second- hand, perhaps you had better do the speaking,’ said Holmes.

I glanced at the hastily-clad clergyman, with the formally-dressed lodger seated beside him, and was amused at the surprise which Holmes’s simple deduction had brought to their faces.

‘Perhaps I had best say a few words first,’ said the vicar, ‘and then you can judge if you will listen to the details from Mr Tregennis, or whether we should not hasten at once to the scene of this mysterious affair. I may explain, then, that our friend here spent last evening in the company of his two brothers, Owen and George, and of his sister Brenda, at their house of Tredannick Wartha, which is near the old stone cross upon the moor. He left them shortly after ten o’clock, playing cards round the dining- room table, in excellent health and spirits. This morning, being an early riser, he walked in that direction before breakfast, and was overtaken by the carriage of Dr Richards, who explained that he had just been sent for on a most urgent call to Tredannick Wartha. Mr Mortimer Tregennis naturally went with him. When he arrived at Tredannick Wartha he found an extraordinary state of things. His two brothers and his sister were seated round the table exactly as he had left them, the cards still spread in front of them and the candles burned down to their sockets. The sister lay back stone-dead in her chair, while the two brothers sat on each side of her laughing, shouting, and singing, the senses stricken clean out of them. All three of them, the dead woman and the two demented men, retained upon their faces an expression of the utmost horror—a convulsion of terror which was dreadful to look upon. There was no sign of the presence of anyone in the house, except Mrs Porter, the old cook and housekeeper, who declared that she had slept deeply and heard no sound during the night. Nothing had been stolen or disarranged, and there is absolutely no explanation of what the horror can be which has frightened a