"Oh, Lady Carstairs is an American, is she?" remarked Mr. Lindsey.

"Just so-haven't you met her?" asked Mr. Portlethorpe.

"Never set eyes on her that I know of," replied Mr. Lindsey. "But go on."

"Well, of course, there was no doubt of Sir Gilbert's ident.i.ty," continued Mr. Portlethorpe; "and as there was also no doubt that Sir Alexander had died intestate, we at once began to put matters right. Sir Gilbert, of course, came into the whole of the real estate, and he and Mrs. Ralston shared the personalty-which, by-the-by, was considerable: they both got nearly a hundred thousand each, in cash. And-there you are!"

"That all?" asked Mr. Lindsey.

Mr. Portlethorpe hesitated a moment-then he glanced at me.

"Moneylaws is safe at a secret," said Mr. Lindsey. "If it is a secret."

"Well, then," answered Mr. Portlethorpe, "it's not quite all. There is a circ.u.mstance which has-I can't exactly say bothered-but has somewhat disturbed me. Sir Gilbert Carstairs has now been in possession of his estates for a little over a year, and during that time he has sold nearly every yard of them except Hathercleugh!"

Mr. Lindsey whistled. It was the first symptom of astonishment that he had manifested, and I glanced quickly at him and saw a look of indescribable intelligence and almost undeniable cunning cross his face. But it went as swiftly as it came, and he merely nodded, as if in surprise.

"Aye!" he exclaimed. "Quick work, Portlethorpe."

"Oh, he gave good reasons!" answered Mr. Portlethorpe. "He said, from the first, that he meant to do it-he wanted, and his wife wanted too, to get rid of these small and detached Northern properties, and buy a really fine one in the South of England, keeping Hathercleugh as a sort of holiday seat. He'd no intention of selling that, at any time. But-there's the fact!-he's sold pretty nearly everything else."

"I never heard of these sales of land," remarked Mr. Lindsey.

"Oh, they've all been sold by private treaty," replied Mr. Portlethorpe. "The Carstairs property was in parcels, here and there-the last two baronets before this one had bought considerably in other parts. It was all valuable-there was no difficulty in selling to adjacent owners."

"Then, if he's been selling to that extent, Sir Gilbert must have large sums of money at command-unless he's bought that new estate you're talking of," said Mr. Lindsey.

"He has not bought anything-that I know of," answered Mr. Portlethorpe. "And he must have a considerable-a very large-sum of money at his bankers'. All of which," he continued, looking keenly at Mr. Lindsey, "makes me absolutely amazed to hear what you've just told me. It's very serious, this charge you're implying against him, Lindsey! Why should he want to take men's lives in this fashion! A man of his position, his great wealth-"

"Portlethorpe!" broke in Mr. Lindsey, "didn't you tell me just now that this man, according to his own account, has lived a most adventurous life, in all parts of the world? What more likely than that in the course of such a life he made acquaintance with queer characters, and-possibly-did some queer things himself? Isn't it a significant thing that, within a year of his coming into the t.i.tle and estates, two highly mysterious individuals turn up here, and that all this foul play ensues? It's impossible, now, to doubt that Gilverthwaite and Phillips came into these parts because this man was already here! If you've read all the stuff that's been in the papers, and add to it just what we've told you about this last adventure with the yacht, you can't doubt it, either."

"It's very, very strange-all of it," agreed Mr. Portlethorpe. "Have you no theory, Lindsey?"

"I've a sort of one," answered Mr. Lindsey. "I think Gilverthwaite and Phillips probably were in possession of some secret about Sir Gilbert Carstairs, and that Crone may have somehow got an inkling of it. Now, as we know, Gilverthwaite died, suddenly-and it's possible that Carstairs killed both Phillips and Crone, as he certainly meant to kill this lad. And what does it all look like?"

Before Mr. Portlethorpe could reply to that last question, and while he was shaking his head over it, one of our junior clerks brought in Mrs. Ralston of Craig, at the mention of whose name Mr. Lindsey immediately bustled forward. She was a shrewd, clever-looking woman, well under middle age, who had been a widow for the last four or five years, and was celebrated in our parts for being a very managing and interfering sort of body who chiefly occupied herself with works of charity and philanthropy and was prominent on committees and boards. And she looked over the two solicitors as if they were candidates for examination, and she the examiner.

"I have been to the police, to find out what all this talk is about Sir Gilbert Carstairs," she began at once. "They tell me you know more than they do, Mr. Lindsey. Well, what have you to say? And what have you to say, Mr. Portlethorpe? You ought to know more than anybody. What does it all amount to!"

Mr. Portlethorpe, whose face had become very dismal at the sight of Mrs. Ralston, turned, as if seeking help, to Mr. Lindsey. He was obviously taken aback by Mrs. Ralston's questions, and a little afraid of her; but Mr. Lindsey was never afraid of anybody, and he at once turned on his visitor.

"Before we answer your questions, Mrs. Ralston," he said, "there's one I'll take leave to ask you. When Sir Gilbert came back at your father's death, did you recognize him?"

Mrs. Ralston tossed her head with obvious impatience.

"Now, what ridiculous nonsense, Mr. Lindsey!" she exclaimed. "How on earth do you suppose that I could recognize a man whom I hadn't seen since I was a child of seven-and certainly not for at least thirty years? Of course I didn't!-impossible!"

CHAPTER XXVII

THE BANK BALANCE

It was now Mr. Portlethorpe and I who looked at each other-with a mutual questioning. What was Mr. Lindsey hinting, suggesting? And Mr. Portlethorpe suddenly turned on him with a direct inquiry.

"What is it you are after, Lindsey?" he asked. "There's something in your mind."

"A lot," answered Mr. Lindsey. "And before I let it out, I think we'd better fully inform Mrs. Ralston of everything that's happened, and of how things stand, up to and including this moment. This is the position, Mrs. Ralston, and the facts"-and he went on to give his caller a brief but complete summary of all that he and Mr. Portlethorpe had just talked over. "You now see how matters are," he concluded, at the end of his epitome, during his delivery of which the lady had gradually grown more and more portentous of countenance. "Now,-what do you say?"

Mrs. Ralston spoke sharply and decisively.

"Precisely what I have felt inclined to say more than once of late!" she answered. "I'm beginning to suspect that the man who calls himself Sir Gilbert Carstairs is not Sir Gilbert Carstairs at all! He's an impostor!"

In spite of my subordinate position as a privileged but inferior member of the conference, I could not help letting out a hasty exclamation of astonishment at that. I was thoroughly and genuinely astounded-such a notion as that had never once occurred to me. An impostor!-not the real man? The idea was amazing-and Mr. Portlethorpe found it amazing, too, and he seconded my exclamation with another, and emphasized it with an incredulous laugh.

"My dear madam!" he said deprecatingly. "Really! That's impossible!"

But Mr. Lindsey, calmer than ever, nodded his head confidently.

"I'm absolutely of Mrs. Ralston's opinion," he declared. "What she suggests I believe to be true. An impostor!"

Mr. Portlethorpe flushed and began to look very uneasy.

"Really!" he repeated. "Really, Lindsey!-you forget that I examined into the whole thing! I saw all the papers-letters, doc.u.ments-Oh, the suggestion is-you'll pardon me, Mrs. Ralston-ridiculous! No man could have been in possession of those doc.u.ments unless he'd been the real man-the absolute Simon Pure! Why, my dear lady, he produced letters written by yourself, when you were a little girl-and-and all sorts of little private matters. It's impossible that there has been any imposture-a-a reflection on me!"

"Cleverer men than you have been taken in, Portlethorpe," remarked Mr.

Lindsey. "And the matters you speak of might have been stolen. But let Mrs. Ralston give us her reasons for suspecting this man-she has some strong ones, I'll be bound."

Mr. Portlethorpe showed signs of irritation, but Mrs. Ralston promptly took up Mr. Lindsey's challenge.

"Sufficiently strong to have made me very uneasy of late, at any rate," she answered. She turned to Mr. Portlethorpe. "You remember," she went on, "that my first meeting with this man, when he came to claim the t.i.tle and estates, was at your office in Newcastle, a few days after he first presented himself to you. He said then that he had not yet been down to Hathercleugh; but I have since found out that he had-or, rather, that he had been in the neighbourhood, incognito. That's a suspicious circ.u.mstance, Mr. Portlethorpe."

"Excuse me, ma'am-I don't see it," retorted Mr. Portlethorpe. "I don't see it at all."

"I do, then!" said Mrs. Ralston. "Suspicious, because I, his sister, and only living relation, was close by. Why didn't he come straight to me? He was here-he took a quiet look around before he let any one know who he was. That's one thing I have against him-whatever you say, it was very suspicious conduct; and he lied about it, in saying he had not been here, when he certainly had been here! But that's far from all. The real Gilbert Carstairs, Mr. Lindsey, as Mr. Portlethorpe knows, lived at Hathercleugh House until he was twenty-two years old. He was always at Hathercleugh, except when he was at Edinburgh University studying medicine. He knew the whole of the district thoroughly. But, as I have found out for myself, this man does not know the district! I have discovered, on visiting him-though I have not gone there much, as I don't like either him or his wife-that this is a strange country to him. He knows next to nothing-though he has done his best to learn-of its features, its history, its people. Is it likely that a man who had lived on the Border until he was two-and-twenty could forget all about it, simply because he was away from it for thirty years? Although I was only seven or eight when my brother Gilbert left home, I was then a very sharp child, and I remember that he knew every mile of the country round Hathercleugh. But-this man doesn't."

Mr. Portlethorpe muttered something about it being very possible for a man to forget a tremendous lot in thirty years, but Mrs. Ralston and Mr. Lindsey shook their heads at his dissent from their opinion. As for me, I was thinking of the undoubted fact that the supposed Sir Gilbert Carstairs had been obliged in my presence to use a map in order to find his exact whereabouts when he was, literally, within two miles of his own house.

"Another thing," continued Mrs. Ralston: "in my few visits to Hathercleugh since he came, I have found out that while he is very well posted up in certain details of our family history, he is unaccountably ignorant of others with which he ought to have been perfectly familiar. I found out, too, that he is exceedingly clever in avoiding subjects in which his ignorance might be detected. But, clever as he is, he has more than once given me grounds for suspicion. And I tell you plainly, Mr. Portlethorpe, that since he has been selling property to the extent you report, you ought, at this juncture, and as things are, to find out how money matters stand. He must have realized vast amounts in cash! Where is it!"

"At his bankers'-in Newcastle, my dear madam!" replied Mr. Portlethorpe. "Where else should it be? He has not yet made the purchase he contemplated, so of course the necessary funds are waiting until he does. I cannot but think that you and Mr. Lindsey are mistaken, and that there will be some proper and adequate explanation of all this, and-"

"Portlethorpe!" exclaimed Mr. Lindsey, "that's no good. Things have gone too far. Whether this man's Sir Gilbert Carstairs or an impostor, he did his best to murder my clerk, and we suspect him of the murder of Crone, and he's going to be brought to justice-that's flat! And your duty at present is to fall in with us to this extent-you must adopt Mrs. Ralston's suggestion, and ascertain how money matters stand. As Mrs. Ralston rightly says, by the sale of these properties a vast amount of ready money must have been acc.u.mulated, and at this man's disposal, Portlethorpe!-we must know if it's true!"

"How can I tell you that?" demanded Mr. Portlethorpe, who was growing more and more nervous and peevish. "I've nothing to do with Sir Gilbert Carstairs' private banking account. I can't go and ask, point blank, of his bankers how much money he has in their hands!"

"Then I will!" exclaimed Mr. Lindsey. "I know where he banks in Newcastle, and I know the manager. I shall go this very night to the manager's private house, and tell him exactly everything that's transpired-I shall tell him Mrs. Ralston's and my own suspicions, and I shall ask him where the money is. Do you understand that?"

"The proper course to adopt!" said Mrs. Ralston. "The one thing to do. It must be done!"

"Oh, very well-then in that case I suppose I'd better go with you," said Mr. Portlethorpe. "Of course, it's no use going to the bank-they'll be closed; but we can, as you say, go privately to the manager. And we shall be placed in a very unenviable position if Sir Gilbert Carstairs turns up with a perfectly good explanation of all this mystery."