know? Nothing at all.or just enough to make them dangerous. I ought to know.my own father was a doctor.

That little Wilkins is about the greatest fool that even I have ever seen. Heart seizure! Sort of thing he would say. Anyone with any sense could see at once that her husband had poisoned her. I always said he'd murder her in her bed, poor soul. Now he's done it. And all you can do is to murmur silly things about 'heart seizure' and 'inquest on Friday.' You ought to be ashamed of yourself, John Cavendish."

"What do you want me to do?" asked John, unable to help a faint smile. "Dash it all, Evie, I can't haul him down to the local police station by the scruff of his neck."

"Well, you might do something. Find out how he did it. He's a crafty beggar. Dare say he soaked fly papers.

Ask Cook if she's missed any."

It occurred to me very forcibly at that moment that to harbour Miss Howard and Alfred Inglethorp under the same roof, and keep the peace between them, was likely to prove a Herculean task, and I did not envy John. I could see by the expression of his face that he fully appreciated the difficulty of the position. For the moment, he sought refuge in retreat, and left the room precipitately.

Dorcas brought in fresh tea. As she left the room, Poirot came over from the window where he had been standing, and sat down facing Miss Howard.

"Mademoiselle," he said gravely, "I want to ask you something."

"Ask away," said the lady, eyeing him with some disfavour.

"I want to be able to count upon your help."

"I'll help you to hang Alfred with pleasure," she replied gruffly. "Hanging's too good for him. Ought to be drawn and quartered, like in good old times."

"We are at one then," said Poirot, "for I, too, want to hang the criminal.""Alfred Inglethorp?""Him, or another.""No question of another. Poor Emily was never murdered until he came along. I don't say she wasn't surrounded by sharks.she was. But it was only her purse they were after. Her life was safe enough. But along

comes Mr. Alfred Inglethorp.and within two months.hey presto!"

"Believe me, Miss Howard," said Poirot very earnestly, "if Mr. Inglethorp is the man, he shall not escape me.

On my honour, I will hang him as high as Haman!"

"That's better," said Miss Howard more enthusiastically.

"But I must ask you to trust me. Now your help may be very valuable to me. I will tell you why. Because, in all this house of mourning, yours are the only eyes that have wept."

Miss Howard blinked, and a new note crept into the gruffness of her voice.

"If you mean that I was fond of her.yes, I was. You know, Emily was a selfish old woman in her way. She

was very generous, but she always wanted a return. She never let people forget what she had done for them.and, that way she missed love. Don't think she ever realized it, though, or felt the lack of it. Hope not, anyway. I was on a different footing. I took my stand from the first. 'So many pounds a year I'm worth to you. Well and good. But not a penny piece besides.not a pair of gloves, nor a theatre ticket.' She didn't understand.was very offended sometimes. Said I was foolishly proud. It wasn't that.but I couldn't explain. Anyway, I kept my self-respect. And so, out of the whole bunch, I was the only one who could allow myself to be fond of her. I watched over her. I guarded her from the lot of them, and then a glib-tongued scoundrel comes along, and pooh! all my years of devotion go for nothing."

Poirot nodded sympathetically.

"I understand, mademoiselle, I understand all you feel. It is most natural. You think that we are lukewarm.that we lack fire and energy.but trust me, it is not so." John stuck his head in at this juncture, and invited us both to come up to Mrs. Inglethorp's room, as he and Mr. Wells had finished looking through the desk in the boudoir.

As we went up the stairs, John looked back to the dining-room door, and lowered his voice confidentially: "Look here, what's going to happen when these two meet?"

I shook my head helplessly.

"I've told Mary to keep them apart if she can."

"Will she be able to do so?"

"The Lord only knows. There's one thing, Inglethorp himself won't be too keen on meeting her."

"You've got the keys still, haven't you, Poirot?" I asked, as we reached the door of the locked room.

Taking the keys from Poirot, John unlocked it, and we all pa.s.sed in. The lawyer went straight to the desk, and

John followed him.

"My mother kept most of her important papers in this despatch-case, I believe," he said.

Poirot drew out the small bunch of keys.

"Permit me. I locked it, out of precaution, this morning."

"But it's not locked now."

"Impossible!"

"See." And John lifted the lid as he spoke.

"Milles tonnerres!" cried Poirot, dumfounded. "And I.who have both the keys in my pocket!" He flung

himself upon the case. Suddenly he stiffened. "En voila une affaire! This lock has been forced."

"What?"

Poirot laid down the case again.

"But who forced it? Why should they? When? But the door was locked?" These exclamations burst from us disjointedly.

Poirot answered them categorically.almost mechanically.

"Who? That is the question. Why? Ah, if I only knew. When? Since I was here an hour ago. As to the door being locked, it is a very ordinary lock. Probably any other of the doorkeys in this pa.s.sage would fit it."

We stared at one another blankly. Poirot had walked over to the mantel-piece. He was outwardly calm, but I noticed his hands, which from long force of habit were mechanically straightening the spill vases on the mantel-piece, were shaking violently.

"See here, it was like this," he said at last. "There was something in that case.some piece of evidence, slight in itself perhaps, but still enough of a clue to connect the murderer with the crime. It was vital to him that it should be destroyed before it was discovered and its significance appreciated. Therefore, he took the risk, the great risk, of coming in here. Finding the case locked, he was obliged to force it, thus betraying his presence. For him to take that risk, it must have been something of great importance."

"But what was it?"

"Ah!" cried Poirot, with a gesture of anger. "That, I do not know! A doc.u.ment of some kind, without doubt, possibly the sc.r.a.p of paper Dorcas saw in her hand yesterday afternoon. And I." his anger burst forth freely."miserable animal that I am! I guessed nothing! I have behaved like an imbecile! I should never have left that case here. I should have carried it away with me. Ah, triple pig! And now it is gone. It is destroyed.but is it destroyed? Is there not yet a chance.we must leave no stone unturned."

He rushed like a madman from the room, and I followed him as soon as I had sufficiently recovered my wits. But, by the time I had reached the top of the stairs, he was out of sight.

Mary Cavendish was standing where the staircase branched, staring down into the hall in the direction in which he had disappeared.

"What has happened to your extraordinary little friend, Mr. Hastings? He has just rushed past me like a mad bull."

"He's rather upset about something," I remarked feebly. I really did not know how much Poirot would wish me to disclose. As I saw a faint smile gather on Mrs. Cavendish's expressive mouth, I endeavoured to try and turn the conversation by saying: "They haven't met yet, have they?"

"Who?"

"Mr. Inglethorp and Miss Howard."

She looked at me in rather a disconcerting manner.

"Do you think it would be such a disaster if they did meet?"

"Well, don't you?" I said, rather taken aback.

"No." She was smiling in her quiet way. "I should like to see a good flare up. It would clear the air. At present we are all thinking so much, and saying so little."

"John doesn't think so," I remarked. "He's anxious to keep them apart."

"Oh, John!"

Something in her tone fired me, and I blurted out: "Old John's an awfully good sort."

She studied me curiously for a minute or two, and then said, to my great surprise: "You are loyal to your friend. I like you for that."

"Aren't you my friend too?"

"I am a very bad friend."

"Why do you say that?"

"Because it is true. I am charming to my friends one day, and forget all about them the next."

I don't know what impelled me, but I was nettled, and I said foolishly and not in the best of taste: "Yet you seem to be invariably charming to Dr. Bauerstein!"

Instantly I regretted my words. Her face stiffened. I had the impression of a steel curtain coming down and

blotting out the real woman. Without a word, she turned and went swiftly up the stairs, whilst I stood like an

idiot gaping after her. I was recalled to other matters by a frightful row going on below. I could hear Poirot shouting and expounding. I was vexed to think that my diplomacy had been in vain. The little man appeared to be taking the whole house into his confidence, a proceeding of which I, for one, doubted the wisdom. Once again I could not help regretting that my friend was so p.r.o.ne to lose his head in moments of excitement. I stepped briskly down the stairs. The sight of me calmed Poirot almost immediately. I drew him aside.

"My dear fellow," I said, "is this wise? Surely you don't want the whole house to know of this occurrence?

You are actually playing into the criminal's hands."

"You think so, Hastings?"

"I am sure of it."

"Well, well, my friend, I will be guided by you."

"Good. Although, unfortunately, it is a little too late now."

"Sure."

He looked so crestfallen and abashed that I felt quite sorry, though I still thought my rebuke a just and wise one.

"Well," he said at last, "let us go, mon ami."

"You have finished here?"

"For the moment, yes. You will walk back with me to the village?"

"Willingly."

He picked up his little suit-case, and we went out through the open window in the drawing-room. Cynthia

Murdoch was just coming in, and Poirot stood aside to let her pa.s.s.