Something in his tone made Jane feel frightened.
"What is it?" she said again.
Poirot said slowly:
"When the boat train reached Boulogne, they found a woman in a first-class carriage, dead."
The color ebbed from Jane's face.
"Anne Morisot?"
"Anne Morisot. In her hand was a little blue glass bottle which had contained prussic acid."
"Oh!" said Jane. "Suicide?"
Poirot did not answer for a moment or two. Then he said, with the air of one who chooses his words carefully:
"Yes, the police think it was suicide."
"And you?"
Poirot slowly spread out his hands in an expressive gesture.
"What else is there to think?"
"She killed herself? Why? Because of remorse or because she was afraid of being found out?"
Poirot shook his head.
"Life can be very terrible," he said. "One needs much courage."
"To kill oneself? Yes, I suppose one does."
"Also to live," said Poirot, "one needs courage."
Chapter 26
The next day Poirot left Paris. Jane stayed behind with a list of duties to perform. Most of these seemed singularly meaningless to her, but she carried them out to the best of her powers. She saw Jean Dupont twice. He mentioned the expedition which she was to join, and Jane did not dare to undeceive him without orders from Poirot, so she hedged as best she could and turned the conversation to other matters.
Five days later she was recalled to England by a telegram.
Norman met her at Victoria and they discussed recent events.
Very little publicity had been given to the suicide. There had been a paragraph in the papers stating that a Canadian lady, a Mrs Richards, had committed suicide in the Paris-Boulogne express, but that was all. There had been no mention of any connection with the aeroplane murder.
Both Norman and Jane were inclined to be jubilant. Their troubles, they hoped, were at an end. Norman was not so sanguine as Jane.
"They may suspect her of doing her mother in, but now that she's taken this way out, they probably won't bother to go on with the case. And unless it is proved publicly, I don't see what good it is going to be to all of us poor devils. From the point of view of the public, we shall remain under suspicion just as much as ever."
He said as much to Poirot, whom he met a few days later in Piccadilly.
Poirot smiled.
"You are like all the rest. You think I am an old man who accomplishes nothing! Listen, you shall come tonight to dine with me. Japp is coming, and also our friend, Mr Clancy. I have some things to say that may be interesting."
The dinner passed off pleasantly. Japp was patronizing and good-humored, Norman was interested, and little Mr Clancy was nearly as thrilled as when he had recognized the fatal thorn.
It seemed clear that Poirot was not above trying to impress the little author.
After dinner, when coffee had been drunk, Poirot cleared his throat in a slightly embarassed manner not free from self-importance.
"My friends," he said, "Mr Clancy here has expressed interest in what he would call 'my methods, Watson,' C'est зa, n'est-ce pas? I propose, if it will not bore you all -"
He paused significantly, and Norman and Japp said quickly, "No, no," and "Most interesting."
"- to give you a little résumé of my methods in dealing with this case."
He paused and consulted some notes. Japp whispered to Norman:
"Fancies himself, doesn't he? Conceit's that little man's middle name."
Poirot looked at him reproachfully and said. "Ahem!"
Three politely interested faces were turned to him and he began:
"I will start at the beginning, my friends. I will go back to the air liner 'Prometheus' on its ill-fated journey from Paris to Croydon. I am going to tell you my precise ideas and impressions at the time; passing on to how I came to confirm or modify them in the light of future events.
"When, just before we reached Croydon, Doctor Bryant was approached by the steward and went with him to examine the body, I accompanied him. I had a feeling that it might - who knows? - be something in my line. I have, perhaps, too professional a point of view where deaths are concerned. They are divided, in my mind, into two classes - deaths which are my affair and deaths which are not my affair - and though the latter class is infinitely more numerous, nevertheless, whenever I come in contact with death, I am like the dog who lifts his head and sniffs the scent.
"Doctor Bryant confirmed the steward's fear that the woman was dead. As to the cause of death, naturally, he could not pronounce on that without a detailed examination. It was at this point that a suggestion was made - by Mr Jean Dupont - that death was due to shock following on a wasp sting. In furtherance of this hypothesis, he drew attention to a wasp that he himself had slaughtered shortly before.
"Now, that was a perfectly plausible theory, and one quite likely to be accepted. There was the mark on the dead woman's neck, closely resembling the mark of a sting, and there was the fact that a wasp had been in the plane.
"But at that moment I was fortunate enough to look down and espy what might at first have been taken for the body of yet another wasp. In actuality it was a native thorn with a little teased yellow-and-black silk on it.
"At this point Mr Clancy came forward and made the statement that it was a thorn shot from a blowpipe after the manner of some native tribe. Later, as you all know, the blowpipe itself was discovered.
"By the time we reached Croydon, several ideas were working in my mind. Once I was definitely on the firm ground, my brain began to work once more with its normal brilliance."
"Go it, M. Poirot," said Japp, with a grin. "Don't have any false modesty."
Poirot threw him a look and went on:
"One idea presented itself very strongly to me - as it did to everyone else - and that was the audacity of a crime being committed in such a manner, and the astonishing fact that nobody noticed its being done!
"There were two other points that interested me. One was the convenient presence of the wasp. The other was the discovery of the blowpipe. As I remarked after the inquest to my friend Japp, why on earth did the murderer not get rid of it by passing it out through the ventilating hole in the window? The thorn itself might be difficult to trace or identify, but a blowpipe which still retained a portion of its price label was a very different matter.
"What was the solution? Obviously, that the murderer wanted the blowpipe to be found.
"But why? Only one answer seemed logical. If a poisoned dart and a blowpipe were found, it would naturally be assumed that the murder had been committed by a thorn shot from a blowpipe. Therefore, in reality the murder had not been committed that way.
"On the other hand, as medical evidence was to show, the cause of death was undoubtedly the poisoned thorn. I shut my eyes and asked myself: 'What is the surest and most reliable way of placing a poisoned thorn in the jugular vein?' And the answer came immediately: 'By hand.'
"And that immediately threw light on the necessity for the finding of the blowpipe. The blowpipe inevitably conveyed the suggestion of distance. If my theory was right, the person who killed Madame Giselle was a person who went right up to her table and bent over her.
"Was there such a person? Yes, there were two people. The two stewards. Either of them could go up to Madame Giselle, lean toward her, and nobody would notice anything unusual.
"Was there anyone else?
"Well, there was Mr Clancy. He was the only person in the car who had passed immediately by Madame Giselle's seat - and I remember that it was he who had first drawn attention to the blowpipe-and-thorn theory."
Mr Clancy sprang to his feet.
"I protest!" he cried. "I protest! This is an outrage!"
"Sit down," said Poirot. "I have not finished yet. I have to show you all the steps by which I arrived at my conclusion.
"I had now three persons as possible suspects. Mitchell, Davis and Mr Clancy. None of them at first sight appeared like murderers, but there was much investigation to be done.
"I next turned my mind to the possibilities of the wasp. It was suggestive, that wasp. To begin with, no one had noticed it until about the time coffee was served. That in itself was rather curious. I constructed a certain theory of the crime. The murderer presented to the world two separate solutions of the tragedy. On the first or simplest, Madame Giselle was stung by a wasp and had succumbed to heart failure. The success of that solution depended on whether or not the murderer was in a position to retrieve the thorn. Japp and I agreed that that could be done easily enough - so long as no suspicion of foul play had arisen. There was the particular coloring of the silk which I had no doubt was deliberately substituted for the original cerise so as to simulate the appearance of a wasp.
"Our murderer, then, approaches the victim's table, inserts the thorn and releases the wasp! The poison is so powerful that death would occurr almost immediately. If Giselle cried out, it would probably not be heard, owing to the noise of the plane. If it was just noticed, well, there was a wasp buzzing about to explain the cry. The poor woman had been stung.
"That, as I say, was Plan No. 1. But supposing that, as actually happened, the poisoned thorn was discovered before the murderer could retrieve it. In that case, the fat is in the fire. The theory of natural death is impossible. Instead of getting rid of the blowpipe through the window, it is put in a place where it is bound to be discovered when the plane is searched. And at once it will be assumed that the blowpipe was the instrument of the crime. The proper atmosphere of distance will be created, and when the blowpipe is traced it will focus suspicion in a definite and prearranged direction.
"I had now my theory of the crime, and I had three suspects, with a barely possible fourth - M. Jean Dupont who had outlined the Death-by-a-wasp-sting theory, and who was sitting on the gangway so near Giselle that he might just possibly have moved from his seat without being noticed. On the other hand, I did not really think he would have dared to take such a risk.
"I concentrated on the problem of the wasp. If the murderer had brought the wasp onto the plane and released it at the psychological moment, he must have had something in the nature of a small box in which to keep it.
"Hence my interest in the contents of the passengers pockets and hand luggage.
"And here I came up against a totally unexpected development. I found what I was looking for - but, as it seemed to me, on the wrong person. There was an empty small-sized Bryant & May's match box in Mr Norman Gale's pocket. But by everybody's evidence, Mr Gale had never passed down the gangway of the car. He had only visited the wash-room compartment and returned to his own seat.
"Nevertheless, although it seems impossible, there was a method by which Mr Gale could have committed the crime - as the contents of his attaché case showed."
"My attaché case?" said Norman Gale. He looked amused and puzzled. "Why, I don't even remember now what was in it."
Poirot smiled at him amiably.
"Wait a little minute. I will come to that. I am telling you my first ideas.
"To proceed, I had four persons who could have done the crime - from the point of view of possibility. The two stewards, Clancy and Gale.
"I now looked at the case from the opposite angle - that of motive; if a motive were to coincide with a possibility - well, I had my murderer! But alas, I could find nothing of the kind. My friend Japp has accused me of liking to make things difficult. On the contrary, I approached this question of motive with all the simplicity in the world. To whose benefit would it be if Madame Giselle were removed? Clearly, to her unknown daughter's benefit, since that unknown daughter would inherit a fortune. There were also certain persons who were in Madame Giselle's power - or shall we say, who might be in Giselle's power for aught we knew? That, then, was a task of elimination. Of the passengers in the plane I could only be certain of one who was undoubtedly mixed up with Giselle. That one was Lady Horbury.
"In Lady Horbury's case the motive was clear. She had visited Giselle at her house in Paris the night before. She was desperate and she had a friend, a young actor, who might easily have impersonated the American who bought the blowpipe, and might also have bribed the clerk in Universal Air Lines to insure that Giselle traveled by the twelve o'clock service.
"I had, as it were, a problem in two halves. I did not see how it was possible for Lady Horbury to commit the crime. And I could not see for what motive the stewards, Mr Clancy or Mr Gale should want to commit it.
"Always, in the back of my mind, I considered the problem of Giselle's unknown daughter and heiress. Were any of my four suspects married, and if so, could one of the wives be this Anne Morisot? If her father was English, the girl might have been brought up in England. Mitchell's wife I soon dismissed - she was of good old Dorset country stock. Davis was courting a girl whose father and mother were alive. Mr Clancy was not married. Mr Gale was obviously head over ears in love with Miss Jane Grey.
"I may say that I investigated the antecedents of Miss Grey very carefully, having learned from her in casual conversation that she had been brought up in an orphanage near Dublin. But I soon satisfied myself that Miss Grey was not Madame Giselle's daughter.
"I made out a table of results. The stewards had neither gained nor lost by Madame Giselle's death, except that Mitchell was obviously suffering from shock. Mr Clancy was planning a book on the subject by which he hoped to make money Mr Gale was fast losing his practice. Nothing very helpful there.
"And yet, at that time I was convinced that Mr Gale was the murderer - there was the empty match box, the contents of his attaché case. Apparently he lost, not gained, by the death of Giselle. But those appearances might be false appearances.
"I determined to cultivate his acquaintance. It is my experience that no one, in the course of conversation, can fail to give themselves away sooner or later. Everyone has an irresistible urge to talk about themselves.
