'Now, there is one most remarkable and suggestive fact which has not met with the attention which it deserves. There is a local train running through Harrow and King's Langley, which is timed in such a way that the express must have overtaken it at or about the period when it eased down its speed to eight miles an hour on account of the repairs of the line. The two trains would at that time be travelling in the same direction at a similar rate of speed and upon parallel lines. It is within every one's experience how, under such circumstances, the occupant of each carriage can see very plainly the passengers in the other carriages opposite to him. The lamps of the express had been lit at Willesden, so that each compartment was brightly illuminated, and most visible to an observer from outside.
'Now, the sequence of events as I reconstruct them would be after this fashion. This young man with the abnormal number of watches was alone in the carriage of the slow train. His ticket, with his papers and gloves and other things, was, we will suppose, on the seat beside him. He was probably an American, and also probably a man of weak intellect. The excessive wearing of jewellery is an early symptom in some forms of mania.
'As he sat watching the carriages of the express which were (on account of the state of the line) going at the same pace as himself, he suddenly saw some people in it whom he knew. We will suppose for the sake of our theory that these people were a woman whom he loved and a man whom he hated–and who in return hated him. The young man was excitable and impulsive. He opened the door of his carriage, stepped from the footboard of the local train to the footboard of the express, opened the other door, and made his way into the presence of these two people. The feat (on the supposition that the trains were going at the same pace) is by no means so perilous as it might appear.
'Having now got our young man, without his ticket, into the carriage in which the elder man and the young woman are travelling, it is not difficult to imagine that a violent scene ensued. It is possible that the pair were also Americans, which is the more probable as the man carried a weapon–an unusual thing in England. If our supposition of incipient mania is correct, the young man is likely to have assaulted the other. As the upshot of the quarrel the elder man shot the intruder, and then made his escape from the carriage, taking the young lady with him. We will suppose that all this happened very rapidly, and that the train was still going at so slow a pace that it was not difficult for them to leave it. A woman might leave a train going at eight miles an hour. As a matter of fact, we know that this woman DID do so.
'And now we have to fit in the man in the smoking carriage. Presuming that we have, up to this point, reconstructed the tragedy correctly, we shall find nothing in this other man to cause us to reconsider our conclusions. According to my theory, this man saw the young fellow cross from one train to the other, saw him open the door, heard the pistol-shot, saw the two fugitives spring out on to the line, realized that murder had been done, and sprang out himself in pursuit. Why he has never been heard of since–whether he met his own death in the pursuit, or whether, as is more likely, he was made to realize that it was not a case for his interference–is a detail which we have at present no means of explaining. I acknowledge that there are some difficulties in the way. At first sight, it might seem improbable that at such a moment a murderer would burden himself in his flight with a brown leather bag. My answer is that he was well aware that if the bag were found his identity would be established. It was absolutely necessary for him to take it with him. My theory stands or falls upon one point, and I call upon the railway company to make strict inquiry as to whether a ticket was found unclaimed in the local train through Harrow and King's Langley upon the 18th of March. If such a ticket were found my case is proved. If not, my theory may still be the correct one, for it is conceivable either that he travelled without a ticket or that his ticket was lost.'
To this elaborate and plausible hypothesis the answer of the police and of the company was, first, that no such ticket was found; secondly, that the slow train would never run parallel to the express; and, thirdly, that the local train had been stationary in King's Langley Station when the express, going at fifty miles an hour, had flashed past it. So perished the only satisfying explanation, and five years have elapsed without supplying a new one. Now, at last, there comes a statement which covers all the facts, and which must be regarded as authentic. It took the shape of a letter dated from New York, and addressed to the same criminal investigator whose theory I have quoted. It is given here in extenso, with the exception of the two opening paragraphs, which are personal in their nature:
'You'll excuse me if I'm not very free with names. There's less reason now than there was five years ago when mother was still living. But for all that, I had rather cover up our tracks all I can. But I owe you an explanation, for if your idea of it was wrong, it was a mighty ingenious one all the same. I'll have to go back a little so as you may understand all about it.
'My people came from Bucks, England, and emigrated to the States in the early fifties. They settled in Rochester, in the State of New York, where my father ran a large dry goods store. There were only two sons: myself, James, and my brother, Edward. I was ten years older than my brother, and after my father died I sort of took the place of a father to him, as an elder brother would. He was a bright, spirited boy, and just one of the most beautiful creatures that ever lived. But there was always a soft spot in him, and it was like mould in cheese, for it spread and spread, and nothing that you could do would stop it. Mother saw it just as clearly as I did, but she went on spoiling him all the same, for he had such a way with him that you could refuse him nothing. I did all I could to hold him in, and he hated me for my pains.
'At last he fairly got his head, and nothing that we could do would stop him. He got off into New York, and went rapidly from bad to worse. At first he was only fast, and then he was criminal; and then, at the end of a year or two, he was one of the most notorious young crooks in the city. He had formed a friendship with Sparrow MacCoy, who was at the head of his profession as a bunco-steerer, green goodsman and general rascal. They took to card-sharping, and frequented some of the best hotels in New York. My brother was an excellent actor (he might have made an honest name for himself if he had chosen), and he would take the parts of a young Englishman of title, of a simple lad from the West, or of a college undergraduate, whichever suited Sparrow MacCoy's purpose. And then one day he dressed himself as a girl, and he carried it off so well, and made himself such a valuable decoy, that it was their favourite game afterwards. They had made it right with Tammany and with the police, so it seemed as if nothing could ever stop them, for those were in the days before the Lexow Commission, and if you only had a pull, you could do pretty nearly everything you wanted.
'And nothing would have stopped them if they had only stuck to cards and New York, but they must needs come up Rochester way, and forge a name upon a cheque. It was my brother that did it, though everyone knew that it was under the influence of Sparrow MacCoy. I bought up that cheque, and a pretty sum it cost me. Then I went to my brother, laid it before him on the table, and swore to him that I would prosecute if he did not clear out of the country. At first he simply laughed. I could not prosecute, he said, without breaking our mother's heart, and he knew that I would not do that. I made him understand, however, that our mother's heart was being broken in any case, and that I had set firm on the point that I would rather see him in Rochester gaol than in a New York hotel. So at last he gave in, and he made me a solemn promise that he would see Sparrow MacCoy no more, that he would go to Europe, and that he would turn his hand to any honest trade that I helped him to get. I took him down right away to an old family friend, Joe Willson, who is an exporter of American watches and clocks, and I got him to give Edward an agency in London, with a small salary and a 15 per cent commission on all business. His manner and appearance were so good that he won the old man over at once, and within a week he was sent off to London with a case full of samples.
'It seemed to me that this business of the cheque had really given my brother a fright, and that there was some chance of his settling down into an honest line of life. My mother had spoken with him, and what she said had touched him, for she had always been the best of mothers to him and he had been the great sorrow of her life. But I knew that this man Sparrow MacCoy had a great influence over Edward and my chance of keeping the lad straight lay in breaking the connection between them. I had a friend in the New York detective force, and through him I kept a watch upon MacCoy. When, within a fortnight of my brother's sailing, I heard that MacCoy had taken a berth in the Etruria, I was as certain as if he had told me that he was going over to England for the purpose of coaxing Edward back again into the ways that he had left. In an instant I had resolved to go also, and to pit my influence against MacCoy's. I knew it was a losing fight, but I thought, and my mother thought, that it was my duty. We passed the last night together in prayer for my success, and she gave me her own Testament that my father had given her on the day of their marriage in the Old Country, so that I might always wear it next my heart.
'I was a fellow-traveller, on the steamship, with Sparrow MacCoy, and at least I had the satisfaction of spoiling his little game for the voyage. The very first night I went into the smoking- room, and found him at the head of a card-table, with a half a dozen young fellows who were carrying their full purses and their empty skulls over to
