Flexen in a non-committal tone.

"It's most probable," said Colonel Grey curtly.

"What do you think, Lady Loudwater?" said Flexen.

"Why, I haven't thought much about it. I always--I--but now I do think about it, I--I--think it's not unlikely," said Olivia, in a tone of no great conviction. "And he was so frightfully upset, too, that night--not that he had any reason to be; but he was."

"Ah, well; my duty is to investigate the matter till there isn't a shadow of doubt left," said Mr. Flexen in a pleasant voice. "I daresay that I shall get to the bottom of it."

With that he left them and went back into the Castle.

At the sight of his back Olivia breathed so deep a sigh of relief that Grey winced at it.

"If only it could be proved that Egbert did commit suicide!" she said wistfully.

"I don't see any chance of it," said Colonel Grey gloomily. Then he added in a tone of but faint hope: "Unless he wrote to one of his friends that he intended to commit suicide."

Olivia shook her head and said: "Egbert wouldn't do that. He hated letter-writing."

"Besides, if he had, we should have heard of it by now," said Grey.

"The friend might be away," said Olivia. "I know that Mr. Outhwaite was in France."

"That's hoping too much," said Grey.

They strolled on in silence, his eyes on her thoughtful face, which under Mr. Flexen's questioning had again grown anxious. Then he said: "This sun is awfully hot. Let's stroll through the wood to the pavilion. It will be delightful there."

"Very well," said Olivia, smiling at him.

Mr. Flexen went back to his room, rang for Holloway, and bade him find Mr. Manley, if he were in, and ask him to come to him. Holloway went, and presently returned to say that Mr. Manley had gone out to lunch, but left word that he would be back to dinner.

Mr. Flexen, therefore, gave his mind to the consideration of his talk with Colonel Grey and Olivia, and the longer he considered it, the more their att.i.tude intrigued and puzzled him. They certainly knew something about the murder, something of the first importance. What could it be?

Again he asked himself could either, or both of them, have actually had a hand in it? It seemed improbable; but he was used to the improbable happening. He could not believe that either of them would have dreamt of committing murder to gain a personal end--to save themselves, for example, from the injuries with which Lord Loudwater had threatened them.

But would they commit murder to save some one else, one to save the other, for example, from such an injury? Murder was, indeed, a violent measure; but Mr. Flexen was inclined to think that either of them might take it. Mr. Manley's confident declaration that they were both creatures of strong emotions had impressed him. He felt that Colonel Grey, under the impulse to save Lady Loudwater, would stick at very little; and he was used to violence and to hold human life cheap. On the other hand, Lady Loudwater would go a long way--a very long way--if any one she loved were threatened. The fact that she had good Italian blood in her veins was very present in his mind.

Again, it would be a matter of sudden impulse, not of grave deliberation.

The irritating sound of Lord Loudwater's snores and the sight of the gleaming knife-blade on the library table coming together after their painful and moving discussion of their dangers might awake the impulse to be rid of him, at any cost, in full strength. He was not disposed to underrate the suggestion of that naked knife-blade on them when they were strung to such a height of emotion. Again, he asked himself, had either of them murdered Lord Loudwater to save the other?

At any rate, they knew who had committed the murder. Of that he was sure.

Could they be shielding a third person? If so, who was that third person?

CHAPTER XII

Mr. Flexen sat pondering this question of a third person for a good twenty minutes.

It could not be Hutchings. There would be no reason to shield Hutchings unless they had instigated or employed him to commit the murder, and that was out of the question. He was not sure, indeed, that Hutchings was not the murderer; the snores and the knife were as likely to have excited the murderous impulse in him as in them. He was quite sure that if Dr.

Thornhill had been able to swear that the wound was not self-inflicted, he could have secured the conviction of Hutchings. But it was incredible that Lady Loudwater or Colonel Grey had employed him to commit the murder. No; if they were shielding a third person, it must be the mysterious, unknown woman who had come with such swift secrecy and so wholly disappeared.

It grew clearer and clearer that there most probably lay that solution of the problem. If that woman herself had not murdered Lord Loudwater, as seemed most likely, she might very well give him the clue for which he was groping. He must find her, and, of course, sooner or later he would find her. But the sooner he found her, the sooner would the problem be solved and his work done. Till he found her he would not find its solution.

It still seemed to him probable that somewhere among Lord Loudwater's papers there was information which would lead to her discovery, and he went into the library to confer again with Mr. Carrington on the matter.

He found him discussing the arrangements for tomorrow's funeral with Mrs.

Carruthers and Wilkins.

When they had gone he said: "Did you come across any information about that mysterious woman in the rest of the papers?"

"Not a word," said Mr. Carrington.

"I've been thinking that you might come across traces of her in his pa.s.s-books--payments or an allowance."

"I thought of that. But there's only one pa.s.sbook, the one in use. Lord Loudwater doesn't seem to have kept them after they were filled. And Manley knows all about this one; he wrote out every cheque in it for Loudwater, and he is quite sure that there were no cheques of any size for a woman among them."

"That's disappointing," said Mr. Flexen. "What about the cheques to 'Self'? Are there any large ones among them?"

"No. They're all on the small side--distinctly on the small side--cheques for ten pounds--and very few of them."

"It is queer that it should be so difficult to find any information about a woman who played such an important part in his life," said Mr.

Flexen gloomily.

"It's not so very uncommon," said the lawyer.

"Well, let's hope that the advertis.e.m.e.nt she'll get from my newspaper friends will bring her to light," said Mr. Flexen.

"It would be a pleasant surprise to me to find them serving some useful purpose," said Mr. Carrington grimly.

Mr. Flexen laughed and said: "You're prejudiced. It's about time to dress for dinner."

Mr. Carrington rose with alacrity and said anxiously, "I hope to goodness Loudwater didn't quarrel with his chef!"

"I've no reason to think so. The food's excellent," said Mr. Flexen.

Mr. Manley joined them at dinner, wearing his best air of a discreet and indulgent man of the world, and confident of making himself valued. He was in very good spirits, for he had persuaded Helena to marry him that day month, and was rejoicing in his success. He did not tell Mr. Flexen, or Mr. Carrington, of his good fortune. He felt that it would hardly interest them, since neither of them knew Helena or was intimate with himself. But, inspired by this success, he took the lead in the conversation, and showed himself inclined to be somewhat patronizing to two men outside the sphere of imaginative literature.

It was Mr. Flexen who broached the subject of the murder.

After they had talked of the usual topics for a while, he said: "By the way, Manley, did you hear Lord Loudwater snore after Hutchings went into the library, or before?"

"So you know that I saw Hutchings in the hall that night?" said Mr.

Manley. "It's wonderful how you find things out. I didn't tell you, and I should have thought that I was the only person awake in the front part of the Castle. I suppose that some one saw him getting his cigarettes from the butler's pantry."

"So that was the reason he gave you for being in the Castle," said Mr.

Flexen. "Well, was it after or before you spoke to him that you heard Lord Loudwater snore?"