When Woodman had gone, Joan sat down to think the matter over quietly. She was absolutely certain that her stepfather was in no way guilty of the murders; but, after what Woodman had said, it seemed only too clear that he must have been on the spot when one of them at least was committed. That meant that he knew the truth; but, for some reason or other, he had evidently not told the police what he knew. That, Joan felt, was not altogether surprising. Probably the police had somehow got him into one of his rages; and she knew that, if that were so, it was just like him to have refused to say a word. It was more than ever necessary for her to see him and get at the real truth of what he knew. Only if she had that to go upon could she help him; and, as Carter Woodman would do nothing, she felt that she must devote all her energies to clearing him of the suspicion. He would have to have a good lawyer of his own, of course; but Joan must see him, and compel him to bestir himself about his defence. For one thing, he was certain to be in low water; and she must at once promise to pay all the expenses of the case.

She admitted to herself that, in the light of what Charis Lang and Woodman had told her, the police seemed to have a strong case against Walter Brooklyn. Her mind went back to Woodman’s words, “After all, somebody must have done it”; and she realised that, for the police “somebody” might mean Walter Brooklyn quite as readily as any one else. She, knowing him as no one besides knew him, might be sure of his innocence; but that was no reason why others should share her conviction. No, if Walter Brooklyn was to escape from the coils in which he was enmeshed, it would be because decisive evidence was forthcoming that he had not committed the murders. And that decisive evidence would have to be deliberately searched for by some one other than the police, who, intent on proving the case against Walter Brooklyn, would not be likely to seek for clues which would invalidate their own case. And, if she did not undertake this task, who would? She felt that the duty was hers.

But if, as she was sure, Walter Brooklyn had not committed murder, then who had, and what had her stepfather been doing in Liskeard House that night? It was true that, by Carter’s account, he had denied his presence there; but it did not surprise Joan at all that her stepfather should have lied to the police. If he was determined not to tell what he knew, his only possible course was to deny that he had been present. She would have to point out to him that, as his presence in the house had been definitely established, the only possible course remaining was to tell the police everything that he knew.

But what could it be that he was holding back? If he had been present when murder was done, he must be concealing the name of the murderer. That puzzled Joan; for she did not see whom Walter Brooklyn could possibly be intent on shielding. Quixotism was as unlike him as deliberate murder. Moreover, who could the murderer have been? She searched her mind in vain for any hint of a clue. There was literally no one whom she could suspect. The whole thing appeared to her merely inexplicable.

She realised, however, that the best way—perhaps the only way—of clearing her stepfather was to bring the real murderer to light. But there might be two different murderers. Joan was inclined to regard it as quite possible that Prinsep might have killed George Brooklyn; but it was utterly inconceivable that George should have killed anybody. Far more clearly than her stepfather, he was not that kind of man. So that the best line of inquiry seemed to be to search for the murderer of John Prinsep. But, she remembered, it was in this case that the police had their strongest evidence against Walter Brooklyn. There was little or nothing, so far as she knew, to connect him with the death of George; but he had been in Prinsep’s room, and there his stick had been found. Surely he must know who had killed John Prinsep. She could do nothing until she had seen him; but seeing him might well clear up the whole tragedy once and for all.

Joan was still lying back in her chair, with closed eyes, trying to think the thing out, when Winter announced that Mr. Ellery was in the lounge, and would like to see her if she felt equal to it. She had not seen Ellery since that fatal Tuesday evening, when he had left with the other guests, announcing his intention of walking back to Chelsea. Doubtless, he had felt that to come sooner would be an intrusion; but she knew enough of his feelings to be sure that it had cost him a struggle to keep away. She was glad—very glad—he had come; for just what she wanted was some one to whom she could talk freely, some one on whose help she could rely in trying to clear her stepfather. Robert Ellery, she knew, would be ready to believe as she believed, and to do everything in his power to help her in her trouble. These thoughts flashed through her mind as she went to the lounge where he was waiting.

Chapter XII.
Robert Ellery

It had been a struggle for Ellery to keep away. He had heard nothing of the tragedy until Wednesday evening, when he had been to dine with his guardian, Harry Lucas, at Hampstead. There had been, of course, nothing in the morning papers, and he had not seen an evening paper. He had, indeed, spent the day in a long country walk, returning to Hampstead across the Heath in time to dress for dinner at his guardian’s house, where he always kept a change of clothes, and often stayed the night. His walk had been taken with a purpose—no less a purpose than going thoroughly with himself into the question of his feeling for Joan Cowper. He had been a silent witness of the scene at Sir Vernon’s party, when Joan had declared outright that nothing would ever make her marry John Prinsep. That outburst of hers had meant a great deal to him. He had hardly concealed from himself before the fact that he was head over ears in love with Joan; but he had always taught himself to regard his love as hopeless, and tried to make himself believe that he ought to get the better of it, and accept as a foregone conclusion Joan’s marriage with Prinsep. He had been told by Sir Vernon himself that they were engaged, and, of course, no word on the matter had passed between him and Joan.

Her definite repudiation of the engagement had therefore come to him as a surprise, and, for the first time, had allowed him to think that his own suit might not be altogether hopeless. Joan liked him: that he knew well enough; but loving was, of course, another story, and he hardly allowed himself, even now, to hope that she loved him. But he made up his mind, after what had passed, first to spend the day in the country, thinking things over, or rather charging at full speed down the Middlesex lanes while the processes of thought went on of their own momentum. Then, he promised himself to tell his guardian in the evening exactly how matters stood, and to ask for his advice. Harry Lucas had known well how to make himself the friend and counsellor, as well as the guardian, of the young man.

Ellery went straight upstairs and dressed without seeing his guardian. But, as soon as they met in the smoking-room before dinner, he saw that something very serious was the matter. Lucas had expected that Ellery would already have heard the news; but, when he found that he knew nothing, he told him the story in a few words, explaining how the bodies had been discovered, but saying nothing about clues or about any opinion he may have entertained as to the identity of the murderer—or the murderers. Lucas himself had been down to Liskeard House to offer his help: he had seen Sir Vernon for a few minutes, and had talked with Joan and Mary Woodman. He had also seen Superintendent Wilson at Scotland Yard, and offered any help it might be in his power to give. But, beyond the bare facts discovered in the morning—startling enough in themselves—he knew little, and, of course, at this stage the inquiries of Inspector Blaikie were only at their beginning.