Now, as Japp moved away from the body, Poirot knelt down by it. He took no interest in the wound. I thought at first that he was

examining the fingers of the hand that had held the pistol, but in a minute I saw that it was a handkerchief carried in the coat-sleeve that interested him. Mr Protheroe was dressed in a dark grey lounge-suit. Finally Poirot got up from his knees, but his eyes still strayed back to the handkerchief as though puzzled.

Japp called to him to come and help to lift the door. Seizing my opportunity, I too knelt down, and taking the handkerchief from the sleeve, scrutinized it minutely. It was a perfectly plain handkerchief of white cambric; there was no mark or stain on it of any kind. I replaced it, shaking my head, and confessing myself baffled.

The others had raised the door. I realized that they were hunting for the key. They looked in vain.

'That settles it,' said Japp. 'The window's shut and bolted.

The murderer left by the door, locking it and taking the key with him. He thought it would be accepted that Protherhoe had locked himself in and shot himself, and that the absence of the key would not be noticed. You agree, M. Poirot?'

'I agree, yes; but it would have been simpler and better to slip the key back inside the room under the door. Then it would look as though it had fallen from the lock.'

'Ah, well, you can't expect everybody to have the bright ideas that you have. You'd have been a holy terror if you'd taken to crime. Any remarks to make, M. Poirot?'

Poirot, it seemed to me, was somewhat at a loss. He looked round the room and remarked mildly and almost apologetically: 'He smoked a lot, this monsieur.'

True enough, the grate was filled with cigarette-stubs, as was an ashtray that stood on a small table near the big armchair.

'He must have got through about twenty cigarettes last night,' remarked Japp. Stooping down, he examined the contents of the grate carefully, then transferred his attention to the ashtray.

'They're all the same kind,' he announced, 'and smoked by the same man. There's nothing there, M. Poirot.'

'I did not suggest that there was,' murmured my friend.

'Ha,' cried Japp, 'what's this?' He pounced on something bright and glittering that lay on the floor near the dead man. 'A

broken cuff-link. I wonder who this belongs to. Dr Giles, I'd be obliged if you'd go down and send up the housekeeper.'

'What about the Parkers? He's very anxious to leave the house - says he's got urgent business in London.'

'I dare say. It'll have to get on without him. By the way things are going, it's likely that there'll be some urgent business down here for him to attend to! Send up the housekeeper, and don't let either of the Parkers give you and Pollard the slip. Did any of the household come in here this morning?'

The doctor reflected.

'No, they stood outside in the corridor while Pollard and I came in.'

'Sure of that?'

'Absolutely certain.'

The doctor departed on his mission.

'Good man, that,' said Japp approvingly. 'Some of these sporting doctors are first-class fellows. Well, I wonder who shot this chap. It looks like one of the three in the house. I hardly suspect the housekeeper. She's had eight years to shoot him in if she wanted to. I wonder who these Parkers are? They're not a prepossessing-looking couple.'

Miss Clegg appeared at this juncture. She was a thin, gaunt woman with neat grey hair parted in the middle, very staid and calm in manner. Nevertheless there was an air of efficiency about her which commanded respect. In answer to Japp's questions, she explained that she had been with the dead man for fourteen years. He had been a generous and considerate master. She had never seen Mr and Mrs Parker until three days ago, when they arrived unexpectedly to stay. She was of the opinion that they had asked themselves - the master had certainly not seemed pleased to see them. The cuff-links which Japp showed her had not belonged to Mr Protheroe - she was sure of that. Questioned about the pistol, she said that she believed her master had a weapon of that kind. He kept it locked up. She had seen it once some years ago, but could not say whether this was the same one. She had heard no shot last night, but that was not surprising, as it was a big, rambling house, and her rooms and those prepared for the

Parkers were at the other end of the building. She did not know what time Mr Protheroe had gone t°bed - he was still up when she retired at half past nine. It was not his habit to go at once to bed when he went to his room. Usually he would sit up half the night, reading and smoking. He was a great smoker.

Then Poirot interposed a question: 'Did your master sleep with his window open or shut, as a rule?' Miss Clegg considered.

'It was usually open, at any rate at the top.' 'Yet now it is closed. Can you explain that?' 'No, unless he felt a draught and shut it.' Japp asked her a few more questions and then dismissed her.

Next he interviewed the Parkers separately. Mrs Parker was inclined to be hysterical and tearful; Mr Parker was full of bluster and abuse. He denied that the cuff-link was his, but as his wife had previously recognized it, this hardly improved matters for him; and as he had also denied ever having been in Protheroe's room, Japp considered that he had sufficient evidence to apply for a warrant.

Leaving Pollard in charge, Japp bustled back to the village and got into telephonic communication with headquarters. Poirot and I strolled back to the inn.

'You're unusually quiet,' I said. 'Doesn't the case interest you?' 'Au contraire, it interests me enormously. But it puzzles me also.' 'The motive is obscure,' I said thoughtfully, 'but I'm certain that Parker's a bad lot. The case against him seems pretty clear but for the lack of motive, and that may come out later.' 'Nothing struck you as being§ especially significant, although overlooked by Japp?' I looked at him curiously.

'What have you got up your sleeve, Poirot?' 'What did the dead man have up his sleeve?' 'Oh, that handkerchiefl' 'Exactly, the handkerchief.' 'A sailor carries his handkerchief in his sleeve,' I said thoughtfully.

'An excellent point, Hastings, though not the one I had in mind.'

'Anything else?'

'Yes, over and over again I go back to the smell of cigarette-smoke.'

'I didn't smell any,' I cried wonderingly.

'No more did I, chef am pounds

I looked earnestly at him. It is so difficult to know when Poirot is pulling one's leg, but he seemed thoroughly in earnest and was frowning to himself.

The inquest took place two days later. In the meantime other evidence had come to light. A tramp had admitted that he had climbed over the wall into the Leigh House garden, where he often slept in a shed that was left unlocked. He declared that at twelve o'clock he had heard two men quarrelling loudly in a room on the first floor. One was demanding a sum of money; the other was angrily refusing. Concealed behind a bush, he had seen the two men as they passed and repassed the lighted window. One he knew well as being Mr Protheroe, the owner of the house; the other he identified positively as Mr Parker.

It was clear now that the Parkers had come to Leigh House to blackmail Protheroe, and when later it was discovered that the dead man's real name was Wendover, and that he had been a lieutenant in the Navy and had been concerned in the blowing up of the first-class cruiser Merrythought, in 9xo, the case seemed to be rapidly clearing. It was supposed that Parker, cognizant of the part Wendover had played, had tracked him down and dem.anded hush-money which the other refused to pay. In the course of the quarrel, Wendover drew his revolver, and Parker snatched it from him and shot him, subsequently endeavouring to give it the appearance of suicide.