"Why did he return to Germany?"

"He was lonely and wanted to come home again. He had made money in America--John was very clever and highly educated--but his heart longed for his own tongue and his own people."

Muller took a folded piece of paper from his pocket. "Do you know this handwriting?"

Miss Roemer read the few lines hastily and her voice trembled as she said: "This is John's handwriting. I know it well. This is the letter that was found on the table?"

"Yes, this letter appears to be the last he had written in life. Do you know to whom it could have been written? The envelope, as I suppose you know from the newspaper reports, was not addressed. Do you know of any friends with whom he could have been on terms of sufficient intimacy to write such a letter? Do you know what these plans for the future could have been? It would certainly be natural that he should have spoken to you first about them."

"No; I cannot understand this letter at all," replied the girl. "I have thought of it frequently these terrible days. I have wondered why it was that if he had friends in the city, he did not speak to me of them. He repeatedly told me that he had no friends there at all, that his life should begin anew after we were married."

"And did he have any particular plans, in a business way, perhaps?"

"No; he had a comfortable little income and need have no fear for the future. John was, of course, too young a man to settle down and do nothing. But the only definite plans he had made were that we should travel a little at first, and then he would look about him for a congenial occupation. I always thought it likely he would resume a law practice somewhere. I cannot understand in the slightest what the plans are to which the letter referred."

"And do you think, from what you know of his state of mind when you saw him last, that he would be likely so soon to be planning pleasures like this?"

"No, no indeed! John was terribly crushed when my guardian insisted on breaking off our engagement. Until my twenty-fourth birthday I am still bound to do as my guardian says, you know. John's life and early misfortune made him, as I have already said, morbidly sensitive and the thought that it would be a bar to anything we might plan in the future, had rendered him so depressed that--and it was not the least of my anxieties and my troubles--that I feared... I feared anything might happen."

"You feared he might take his own life, do you mean?"

"Yes, yes, that is what I feared. But is it not terrible to think that he should have died this way--by the hand of a murderer?"

"H'm! And you cannot remember any possible friend he may have found--some schoolboy friend of his youth, perhaps, with whom he had again struck up an acquaintance."

"Oh, no, no, I am positive of that. John could not bear to hear the names even of the people he had known before his misfortune. Still, I do remember his once having spoken of a man, a German he had met in Chicago and rather taken a fancy to, and who had also returned to Germany."

"Could this possibly have been the man to whom the letter is addressed?"

"No, no. This friend of John's was not married; I remember his saying that. And he lived in Germany somewhere--let me think--yes, in Frankfort-on-Main."

"And do you remember the man's name?"

"No, I cannot, I am sorry to say. John only mentioned it once. It was only by a great effort that I could remember the incident at all."

"And has it not struck you as rather peculiar that this friend, the one to whom the cordial letter was addressed, did not come forward and make his ident.i.ty known? G---- is a city, it is true, but it is not a very large city, and any man being on terms of intimate acquaintance with one who was murdered would be apt to come forward in the hope of throwing some light on the mystery."

"Why, yes, I had not thought of that. It is peculiar, is it not? But some people are so foolishly afraid of having anything to do with the police, you know."

"That is very true, Miss Roemer. Still it is a queer incident and something that I must look into."

"What do you believe?" asked the girl tensely.

"I am not in a position to say as yet. When I am, I will come to you and tell you."

"Then you do not think that my guardian killed John--that there was a quarrel between the men?"

"There is, of course, a possibility that it may have been so. You know your guardian better than I do, naturally. Our knowledge of a man's character is often a far better guide than any circ.u.mstantial evidence."

"My guardian is a man of the greatest uprightness of character. But he can be very hard and pitiless sometimes. And he has a violent temper which his weak heart has forced him to keep in control of late years."

"All this speaks for the possibility that there may have been a quarrel ending in the fatal shot. But what I want to know from you is this--do you think it possible, that, this having happened, Albert Graumann would not have been the first to confess his unpremeditated crime? Is not this the most likely thing for a man of his character to do? Would he so stubbornly deny it, if it had happened?"

The girl started. "I had not thought of that! Why, why, of course, he might have killed John in a moment of temper, but he was never a man to conceal a fault. He is as pitiless towards his own weakness, as towards that of others. You are right, oh, you must be right. Oh, if you could take this awful fear from my heart! Even my grief for John would be easier to bear then."

Muller rose from his chair. "I think I can promise you that this load will be lifted from your heart, Miss Roemer."

"Then you believe--that it was just a case of murder for robbery? For the money? And John had some valuable jewelry, I know that."

"I do not know yet," replied Muller slowly, "but I will find out, I generally do."

"Oh, to think that I should have done that poor man such an injustice!

It is terrible, terrible! This house has been ghastly these days.

His poor aunt knows that he is innocent--she could never believe otherwise--she has felt the hideous suspicion in my mind--it has made her suffering worse--will they ever forgive me?"

"Her joy, if I can free her nephew, will make her forget everything. Go to her now, Miss Roemer, comfort her with the a.s.surance that you also believe him to be innocent. I must hasten back to G---- and go on with this quest."

The girl stood at the doorway shaded by the overhanging branches of two great trees, looking down the street after the slight figure of the detective. "Oh, it is all easier to hear, hard as it is, easier now that this horrible suspicion has gone from my mind--why did I not think of that before?"

Alone in the corner of the smoking compartment in the train to G--, Muller arranged in his mind the facts he had already gathered. He had questioned the servants of John Siders' former household, had found that the dead man received very few letters, only an occasional business communication from his bank. Of the few others, the servants knew nothing except that he had always thrown the envelopes carelessly in the waste paper basket and had never seemed to have any correspondence which he cared to conceal. No friend from elsewhere had ever visited him in Grunau, and he had made few friends there except the Graumann family.

The facts of the case, as he knew them now, were such as to make it extremely doubtful that Graumann was the murderer. Muller himself had been inclined to believe in the possibility of a quarrel between the two men, particularly when he had heard that Graumann himself was in love with his handsome ward. But the second thought that came to him then, impelled by the unerring instinct that so often guided him to the truth, was the a.s.surance that in a case of this kind, in a case of a quarrel terminating fatally, a man like Albert Graumann would be the very first to give himself up to the police and to tell the facts of the case.

Albert Graumann was a man of honour and unimpeachable integrity. Such a man would not persist in a foolish denial of the deed which he had committed in a moment of temper. There would be nothing to gain from it, and his own conscience would be his severest judge. "The disorder in the room?" thought Muller. "It'll be too late for that now. I suppose they have rearranged the place. I can only go by what the local detectives have seen, by the police reports. But I do not understand this extreme disorder. There is no reason why there should be a struggle when the robber was armed with a pistol. If Siders was supposed to have been interrupted when writing a letter, interrupted by a thief come with intent to steal, a thief armed with a revolver, the sight of this weapon alone would be sufficient to insure his not moving from his seat. I can understand the open drawers and cupboard; that is explained by the thief's hasty search for booty. But the torn window curtain and the overturned chairs are peculiar.

"Of course there is always a possibility that the thief might have entered one room while Siders was in the other; that the latter might have surprised the robber in his search for money or valuables, and that there might have been a hand-to-hand struggle before the intruder could pull out his revolver. Oh, if I could only have seen the body! This is working under terrific difficulties. The marks of a hand-to-hand struggle would have been very plain on the clothes and on the person of the murdered man. But this letter? I do not understand this letter at all. It is the dead man's handwriting, that we know, but why did not the friend to whom it was addressed come forward and make himself known? As far as I can learn from the police reports in G--, there was no personal interest shown, no personal inquiries made about the dead man. There was only the natural excitement that a murder would create. Now a family, expecting to make a pleasure excursion with a friend in a day or two and suddenly hearing that this friend had been found murdered in his lodgings, would be inclined to take some little personal interest in the matter. These people must have been in town and at home, for the excursion spoken of in the letter was to occur two days after the murder. Miss Roemer's remark about the dread that some people have as to any connection with the police, is true to a limited extent only. It is true only of the ignorant mind, not of a man presumably well-to-do and properly educated. I do not understand why the man to whom this letter was addressed has not made himself known. The only explanation is--that there was no such man!" A sudden sharp whistle broke from the detective's lips.

"I must examine the dead man's personal effects, his baggage, his papers; there may be something there. His queer letter to Graumann--his desire that the latter's visit should be kept secret--a visit which apparently had no cause at all, except to get Graumann to the house, to get him to the house in a way that he should be seen coming, but should not be seen going away. What does this mean?

"Graumann was the only person against whom Siders had an active cause of quarrel for the moment. There was one other man whom he hated, and this other man was the prosecuting attorney who would conduct any case of murder that came up in the town of G--.

"Now John Siders is found murdered--is found killed, in his lodgings, the morning after he has arranged things so that his antagonist, his rival in love, Albert Graumann, shall come under suspicion of having murdered him.

"What evidence have we that this man did not commit suicide? We have the evidence of the disorder in the room, a disorder that could have been made just as well by the man himself before he ended his own life. We have the evidence of a letter to some unknown, making plans for pleasure during the next days, and speaking of further plans, presumably concerning business, for the future. In a town the size of G--, where every one must have read of the murder, no one has come forward claiming to be the friend for whom this letter was written. Until this Unknown makes himself known, the letter as an evidence points rather to premeditated suicide than to the contrary. Oh, if I could only have seen the body! They tell me the pistol was found some little distance from the body. Is it at all likely that a murderer would go away leaving such evidence behind him? If Graumaun had killed Siders in a hasty quarrel, he might possibly, in his excitement, have left his revolver. But I have already disposed of this possibility. A man of sufficient brains to so carefully plan his suicide as to conceal every trace of it and cast suspicion upon the man who had made him unhappy, such a one would be quite clever enough to throw the pistol far away from his body and to leave no traces of powder on his coat or any such other evidence.

"If I were to say now what I think, I would say that John Siders deliberately took his own life and planned it in such a way as to cast suspicion upon Albert Graumann. But that would indeed be a terrible revenge. And I must have some tangible proof of it before any court will accept my belief. This proof must be hidden somewhere. The thing for me to do is to find it."

The evidence gathered at the time of the death went to show that Siders had been paid a considerable sum in cash for the sale of his property at Grunau. And there was no trace of his having deposited this sum in any bank in G---- or in Grunau, in both of which places he had deposited other securities. Therefore the money had presumably been in his room at the time of his death. A search had been made for this money in every possible place of concealment among the dead man's belongings, and it had not been found. Muller asked the Police Commissioner to give him the key to the rooms, which were still officially closed, and also the keys to the dead man's pieces of baggage. Commissioner Lange seemed to think all this extra search quite unnecessary, as it did not occur to him that anything else was to be looked for except the money.

It was quite late when Muller began his examination of the dead man's effects. He was struck by the fact that there was scarcely a bit of paper to be found anywhere, no letters, no business papers, except bank books showing the amount of his securities in the bank in G---- and in Grunau, and giving facts about some investments in Chicago. There was nothing of more recent date and no personal correspondence whatever. The same was true of the pockets of the suit Siders had been wearing at the time of his death. A man of any property or position at all in the world gathers about him so much of this kind of material that its absence shows premeditation. The suit Siders had been wearing when he was killed was lying on the table in the room. It was a plain grey business suit of good cut and material. The body had been prepared for burial in a beseeming suit of black. Muller made a careful examination of the clothes, and found only what the police reports showed him had already been found by the examination made by the local authorities. Upon a second careful examination, however, he found that in one of the vest pockets there was a little extra pocket, like a change pocket, and in it he found a crumpled piece of paper. He took it out, smoothed and read it. It was a post office receipt for a registered letter. The date was still clear, but the name of the person to whom the letter had been addressed was illegible. The creases of the paper and a certain dampness, as if it had been inadvertently touched by a wet finger, had smeared the writing. But the letter had been sent the day before the death of John Siders, and it had been registered from the main post office in G--. This was sufficient for Muller. Then he turned to the desk. Here also there was nothing that could help him. But a sudden thought, came to him, and he took up the blotting pad. This, to his delight, was in the form of a book with a handsome embroidered cover. It looked comparatively new and was, as Muller surmised, a gift from Miss Roemer to her betrothed. But few of the pages had been used, and on two of them a closely written letter had been blotted several times, showing that there had been several sheets of the letter. Muller held it up to the looking-gla.s.s, but the repeated blotting had blurred the writing to such an extent that it was impossible to decipher any but a few disconnected words, which gave no clue. On a page further along on the blotter, however, he saw what appeared to be the impression of an address. He held it up to the gla.s.s and gave a whistle of delight. The words could be plainly deciphered here:

"MR. LEO PERNBURG, "FRANKFURT AM MAIN, "MAINZER LANDSTRa.s.sE."

and above the name was a smear which, after a little study, could be deciphered as the written word "Registered."

With this page of the blotter carefully tucked away in his pocketbook, Muller hurried to the post office, arriving just at closing hour. He made himself known at once to the postmaster, and asked to be shown the records of registered letters sent on a certain date. Here he found scheduled a letter addressed to Mr. Leo Pernburg, Frankfurt am Main, sent by John Siders, G--, Josef Street 7.

Muller then hastened to the telegraph office and despatched a lengthy telegram to the postal authorities in Frankfurt am Main. When the answer came to him next morning, he packed his grip and took the first express train leaving G--. He first made a short visit, however, to Albert Graumann's cell in the prison. Muller was much too kind-hearted not to relieve the anxiety of this man, to whom such mental strain might easily prove fatal. He told Graumann that he was going in search of evidence which might throw light on the death of Siders, and comforted the prisoner with the a.s.surance that he, Muller, believed Graumann innocent, and believed also that within a day or two he would return to G---- with proofs that his belief was the right one.

Three days later Muller returned to Grunau and went at once to the Graumann home. It was quite late when he arrived, but he had already notified Miss Roemer by telegram as to his coming, with a request that she should be ready to see him. He found her waiting for him, pale and anxious-eyed, when he arrived. "I have been to Frankfurt am Main," he said, "and I have seen Mr. Pernburg--"