"Yes, left severely alone," continued the man in the corner with a sarcastic chuckle. "So severely alone, in fact, that one quarter of an hour after another passed by and still the magnificent police officer in the gorgeous uniform did not return. Then, when it was too late, Schwarz cursed himself once again for the double-dyed idiot that he was. He had been only too ready to believe that Prince Semionicz was a liar and a rogue, and under these unjust suspicions he had fallen an all too easy prey to one of the most cunning rascals he had ever come across.

"An inquiry from the hall porter at the North-Western elicited the fact that no such personage as Mr. Schwarz described had entered the hotel. The young man asked to see Prince Semionicz, hoping against hope that all was not yet lost. The Prince received him most courteously; he was dictating some letters to his secretary, while the valet was in the next room preparing his master's evening clothes. Mr. Schwarz found it very difficult to explain what he actually did want.

"There stood the dressing-case in which the Prince had locked up the jewels, and there the bag from which the secretary had taken the bank-notes. After much hesitation on Schwarz's part and much impatience on that of the Prince, the young man blurted out the whole story of the so-called Russian police officer whose card he still held in his hand.

"The Prince, it appears, took the whole thing wonderfully good-naturedly; no doubt he thought the jeweller a hopeless fool. He showed him the jewels, the receipt he held, and also a large bundle of bank-notes similar to those Schwarz had with such culpable folly given up to the clever rascal in the cab.

"'I pay all my bills with Bank of England notes, Mr. Schwarz. It would have been wiser, perhaps, if you had spoken to the manager of the hotel about me before you were so ready to believe any cock-and-bull story about my supposed rogueries.'

"Finally he placed a small 16mo volume before the young jeweller, and said with a pleasant smile:

"'If people in this country who are in a large way of business, and are therefore likely to come in contact with people of foreign nationality, were to study these little volumes before doing business with any foreigner who claims a title, much disappointment and a great loss would often be saved. Now in this case had you looked up page 797 of this little volume of Gotha's Almanach you would have seen my name in it and known from the first that the so-called Russian detective was a liar.'

"There was nothing more to be said, and Mr. Schwarz left the hotel. No doubt, now that he had been hopelessly duped he dared not go home, and half hoped by communicating with the police that they might succeed in arresting the thief before he had time to leave Liverpool. He interviewed Detective-Inspector Watson, and was at once confronted with the awful difficulty which would make the recovery of the bank-notes practically hopeless. He had never had the time or opportunity of jotting down the numbers of the notes.

"Mr. Winslow, though terribly wrathful against his nephew, did not wish to keep him out of his home. As soon as he had received Schwarz's letter, he traced him, with Inspector Watson's help, to his lodgings in North Street, where the unfortunate young man meant to remain hidden until the terrible storm had blown over, or perhaps until the thief had been caught red-handed with the booty still in his hands.

"This happy event, needless to say, never did occur, though the police made every effort to trace the man who had decoyed Schwarz into the cab. His appearance was such an uncommon one; it seemed most unlikely that no one in Liverpool should have noticed him after he left that cab. The wonderful fur coat, the long beard, all must have been noticeable, even though it was past four o'clock on a somewhat foggy December afternoon.

"But every investigation proved futile; no one answering Schwarz's description of the man had been seen anywhere. The papers continued to refer to the case as 'the Liverpool Mystery.' Scotland Yard sent Mr. Fairburn down — the celebrated detective — at the request of the Liverpool police, to help in the investigations, but nothing availed.

"Prince Semionicz, with his suite, left Liverpool, and he who had attempted to blacken his character, and had succeeded in robbing Messrs. Winslow and Vassall of £10,500, had completely disappeared."

The man in the corner readjusted his collar and necktie, which, during the narrative of this interesting mystery, had worked its way up his long, crane-like neck under his large flappy ears. His costume of checked tweed of a peculiarly loud pattern had tickled the fancy of some of the waitresses, who were standing gazing at him and giggling in one corner. This evidently made him nervous. He gazed up very meekly at Polly, looking for all the world like a bald-headed adjutant dressed for a holiday.

"Of course, all sorts of theories of the theft got about at first. One of the most popular, and at the same time most quickly exploded, being that young Schwarz had told a cock-and-bull story, and was the actual thief himself.

"However, as I said before, that was very quickly exploded, as Mr. Schwarz senior, a very wealthy merchant, never allowed his son's carelessness to be a serious loss to his kind employers. As soon as he thoroughly grasped all the circumstances of the extraordinary case, he drew a cheque for £10,500 and remitted it to Messrs. Winslow and Vassall. It was just, but it was also high-minded.

"All Liverpool knew of the generous action, as Mr. Winslow took care that it should; and any evil suspicion regarding young Mr. Schwarz vanished as quickly as it had come.

"Then, of course, there was the theory about the Prince and his suite, and to this day I fancy there are plenty of people in Liverpool, and also in London, who declare that the so-called Russian police officer was a confederate. No doubt that theory was very plausible, and Messrs. Winslow and Vassall spent a good deal of money in trying to prove a case against the Russian Prince.

"Very soon, however, that theory was also bound to collapse. Mr. Fairburn, whose reputation as an investigator of crime waxes in direct inverted ratio to his capacities, did hit upon the obvious course of interviewing the managers of the larger London and Liverpool agents de change. He soon found that Prince Semionicz had converted a great deal of Russian and French money into English bank-notes since his arrival in this country. More than £30,000 in good solid, honest money was traced to the pockets of the gentleman with the sixteen quarterings. It seemed, therefore, more than improbable that a man who was obviously fairly wealthy would risk imprisonment and hard labour, if not worse, for the sake of increasing his fortune by £10,000.

"However, the theory of the Prince's guilt has taken firm root in the dull minds of our police authorities. They have had every information with regard to Prince Semionicz's antecedents from Russia; his position, his wealth, have been placed above suspicion, and yet they suspect and go on suspecting him or his secretary. They have communicated with the police of every European capital; and while they still hope to obtain sufficient evidence against those they suspect, they calmly allow the guilty to enjoy the fruit of his clever roguery."

"The guilty?" said Polly. "Who do you think — "

"Who do I think knew at that moment that young Schwarz had money in his possession?" he said excitedly, wriggling in his chair like a Jack-in-the-box. "Obviously some one was guilty of that theft who knew that Schwarz had gone to interview a rich Russian, and would in all probability return with a large sum of money in his possession?"

"Who, indeed, but the Prince and his secretary?" she argued. "But just now you said — "

"Just now I said that the police were determined to find the Prince and his secretary guilty; they did not look further than their own stumpy noses. Messrs. Winslow and Vassall spent money with a free hand in those investigations. Mr. Winslow, as the senior partner, stood to lose over £9000 by that robbery. Now, with Mr. Vassall it was different.

"When I saw how the police went on blundering in this case I took the trouble to make certain inquiries, the whole thing interested me so much, and I learnt all that I wished to know. I found out, namely, that Mr. Vassall was very much a junior partner in the firm, that he only drew ten per cent of the profits, having been promoted lately to a partnership from having been senior assistant.

"Now, the police did not take the trouble to find that out."

"But you don't mean that — "

"I mean that in all cases where robbery affects more than one person the first thing to find out is whether it affects the second party equally with the first. I proved that to you, didn't I, over that robbery in Phillimore Terrace? There, as here, one of the two parties stood to lose very little in comparison with the other — "

"Even then — " she began.

"Wait a moment, for I found out something more. The moment I had ascertained that Mr. Vassall was not drawing more than about £500 a year from the business profits I tried to ascertain at what rate he lived and what were his chief vices. I found that he kept a fine house in Albert Terrace. Now, the rents of those houses are £250 a year. Therefore speculation, horse-racing or some sort of gambling, must help to keep up that establishment. Speculation and most forms of gambling are synonymous with debt and ruin. It is only a question of time. Whether Mr. Vassall was in debt or not at the time, that I cannot say, but this I do know, that ever since that unfortunate loss to him of about £1000 he has kept his house in nicer style than before, and he now has a good banking account at the Lancashire and Liverpool bank, which he opened a year after his 'heavy loss.'"

"But it must have been very difficult — " argued Polly.

"What?" he said. "To have planned out the whole thing? For carrying it out was mere child's play. He had twenty-four hours in which to put his plan into execution. Why, what was there to do? Firstly, to go to a local printer in some out-of-the-way part of the town and get him to print a few cards with the high-sounding name. That, of course, is done 'while you wait.' Beyond that there was the purchase of a good second-hand uniform, fur coat, and a beard and a wig from a costumier's.

"No, no, the execution was not difficult; it was the planning of it all, the daring that was so fine. Schwarz, of course, was a foreigner; he had only been in England a little over a fortnight. Vassall's broken English misled him; probably he did not know the junior partner very intimately. I have no doubt that but for his uncle's absurd British prejudice and suspicions against the Russian Prince, Schwarz would not have been so ready to believe in the latter's roguery. As I said, it would be a great boon if English tradesmen studied Gotha more; but it was clever, wasn't it? I couldn't have done it much better myself."

That last sentence was so characteristic. Before Polly could think of some plausible argument against his theory he was gone, and she was trying vainly to find another solution to the Liverpool mystery.