According to William Burgess, Mr. Clayton arrived at the flat at about 7:55. Major Rich was out but was due to return any moment, so Burgess suggested that Mr. Clayton should come in and wait. Clayton said he had no time but would come in and write a note. He explained that he was on his way to catch a train at King's Cross. The valet showed him into the sitting room and himself returned to the kitchen, where he was engaged in the preparation of canapés for the party. The valet did not hear his master return, but about ten minutes later, Major Rich looked into the kitchen and told Burgess to hurry out and get some Turkish cigarettes, which were Mrs. Spence's favorite smoking. The valet did so and brought them to his master in the sitting room. Mr. Clayton was not there, but the valet naturally thought he had already left to catch his train.
Major Rich's story was short and simple. Mr. Clayton was not in the flat when he himself came in and he had no idea that he had been there. No note had been left for him and the first he heard of Mr. Clayton's journey to Scotland was when Mrs. Clayton and the others arrived.
There were two additional items in the evening papers. Mrs. Clayton who was "prostrated with shock" had left her flat in Cardigan Gardens and was believed to be staying with friends.
The second item was in the stop press. Major Charles Rich had been charged with the murder of Arnold Clayton and had been taken into custody.
"So that is that," said Poirot, looking up at Miss Lemon. "The arrest of Major Rich was to be expected. But what a remarkable case. What a very remarkable case! Do you not think so?"
"I suppose such things do happen, M. Poirot," said Miss Lemon without interest.
"Oh certainly! They happen every day. Or nearly every day. But usually they are quite understandable - though distressing."
"It is certainly a very unpleasant business."
"To be stabbed to death and stowed away in a Spanish chest is certainly unpleasant for the victim - supremely so. But when I say this is a remarkable case, I refer to the remarkable behavior of Major Rich."
Miss Lemon said with faint distaste:
"There seems to be a suggestion that Major Rich and Mrs. Clayton were very close friends... It was a suggestion and not a proved fact, so I did not include it."
"That was very correct of you. But it is an inference that leaps to the eye. Is that all you have to say?"
Miss Lemon looked blank. Poirot sighed, and missed the rich colorful imagination of his friend Hastings. Discussing a case with Miss Lemon was uphill work.
"Consider for a moment this Major Rich. He is in love with Mrs. Clayton - granted... He wants to dispose of her husband - that, too, we grant, though if Mrs. Clayton is in love with him, and they are having the affair together, where is the urgency? It is, perhaps, that Mr. Clayton will not give his wife the divorce? But it is not of all this that I talk. Major Rich, he is a retired soldier, and it is said sometimes that soldiers are not brainy. But, tout de même, this Major Rich, is he, can he be, a complete imbecile?"
Miss Lemon did not reply. She took this to be a purely rhetorical question.
"Well," demanded Poirot. "What do you think about it all?"
"What do I think?" Miss Lemon was startled.
"Mais oui - you!"
Miss Lemon adjusted her mind to the strain put upon it. She was not given to mental speculation of any kind unless asked for it. In such leisure moments as she had, her mind was filled with the details of a superlatively perfect filing system. It was her only mental recreation.
"Well -" she began, and paused.
"Tell me just what happened - what you think happened, on that evening. Mr. Clayton is in the sitting room writing a note, Major Rich comes back - what then?"
"He finds Mr. Clayton there. They - I suppose they have a quarrel. Major Rich stabs him. Then, when he sees what he has done, he - he puts the body in the chest. After all, the guests, I suppose, might be arriving any minute."
"Yes, yes. The guests arrive! The body is in the chest. The evening passes. The guests depart. And then -"
"Well, then, I suppose Major Rich goes to bed and - Oh!"
"Ah," said Poirot. "You see it now. You have murdered a man. You have concealed his body in a chest. And then - you go peacefully to bed, quite unperturbed by the fact that your valet will discover the crime in the morning."
"I suppose it's possible that the valet might never have looked inside the chest?"
"With an enormous pool of blood on the carpet underneath it?"
"Perhaps Major Rich didn't realize that the blood was there."
"Was it not somewhat careless of him not to look and see?"
"I dare say he was upset," said Miss Lemon. Poirot threw up his hands in despair.
Miss Lemon seized the opportunity to hurry from the room.