“‘You are close to the King’s Pyland training stables,” she said.

“‘Oh, indeed! What a stroke of luck!” he cried. “I understand that a stable boy sleeps there alone every night. Perhaps that is his supper which you are carrying to him. Now I am sure that you would not be too proud to earn the price of a new dress, would you?” He took a piece of white paper folded up out of his waistcoat pocket. “See that the boy has this to-night, and you shall have the prettiest frock that money can buy.”

‘She was frightened by the earnestness of his manner, and ran past him to the window through which she was accustomed to hand the meals. It was already open, and Hunter was seated at the small table inside. She had begun to tell him of what had happened, when the stranger came up again.

“‘Good evening,” said he, looking through the window, “I wanted to have a word with you.” The girl has sworn that as he spoke she noticed the corner of the little paper packet protruding from his closed hand.

“‘What business have you here?” asked the lad.

“‘It’s business that may put something into your pocket,” said the other. “You’ve two horses in for the Wessex Cup—Silver Blaze and Bayard. Let me have the straight tip, and you won’t be a loser. Is it a fact that at the weights Bayard could give the other a hundred yards in five furlongs, and that the stable have put their money on him?”

“‘So you’re one of those damned touts,” cried the lad. “I’ll show you how we serve them in King’s Pyland.” He sprang up and rushed across the stable to unloose the dog. The girl fled away to the house, but as she ran she looked back, and saw that the stranger was leaning through the window. A minute later, however, when Hunter rushed out with the hound he was gone, and though the lad ran all round the buildings he failed to find any trace of him.’

‘One moment!’ I asked. ‘Did the stable boy, when he ran out with the dog, leave the door unlocked behind him?’

‘Excellent, Watson; excellent!’ murmured my companion. ‘The importance of the point struck me so forcibly that I sent a special wire to Dartmoor yesterday to clear the matter up. The boy locked the door before he left it. The window, I may add, was not large enough for a man to get through.

‘Hunter waited until his fellow grooms had returned, when he sent a message up to the trainer and told him what had occurred. Straker was excited at hearing the account, although he does not seem to have quite realized its true significance. It left him, however, vaguely uneasy, and Mrs Straker, waking at one in the morning, found that he was dressing. In reply to her inquiries, he said that he could not sleep on account of his anxiety about the horses, and that he intended to walk down to the stables to see that all was well. She begged him to remain at home, as she could hear the rain pattering against the windows, but in spite of her entreaties he pulled on his large mackintosh and left the house.

‘Mrs Straker awoke at seven in the morning, to find that her husband had not yet returned. She dressed herself hastily, called the maid, and set off for the stables. The door was open; inside, huddled together upon a chair, Hunter was sunk in a state of absolute stupor, the favourite’s stall was empty, and there were no signs of his trainer.

‘The two lads who slept in the chaff-cutting loft above the harness-room were quickly aroused. They had heard nothing during the night, for they are both sound sleepers. Hunter was obviously under the influence of some powerful drug; and, as no sense could be got out of him, he was left to sleep it off while the two lads and the two women ran out in search of the absentees. They still had hopes that the trainer had for some reason taken out the horse for early exercise, but on ascending the knoll near the house, from which all the neighbouring moors were visible, they not only could see no signs of the favourite, but they perceived something which warned them that they were in the presence of a tragedy.