I ought here to declare that, having regard to all the curious and mysterious circumstances of the past, the situation was, to me, far from satisfactory. As we strolled together along Market Street that cold night discussing the affair, rather than remain in the public room of the hotel, Reggie suggested that the secret might be written somewhere and sealed up among the dead man’s effects. But in that case, unless it were addressed to us, it would be opened by the persons the dying man had designated as “those scoundrelly lawyer chaps,” and in all probability be turned by them to profitable account.

His solicitors were, we knew, Messrs Leighton, Brown and Leighton, an eminently respectable firm in Bedford Row; therefore we sent a telegram from the Central Office informing them of their client’s sudden death, and requesting that one of the firm should at once come to Manchester to attend the inquest which Doctor Glenn had declared would be necessary. As the deceased man had expressed a wish that Mabel should, for the present, remain in ignorance, we did not inform her of the tragic occurrence.

Curiosity prompted us to ascend again to the dead man’s chamber and examine the contents of his kit-bag and suit-case, but, beyond his clothes, a cheque-book and about ten pounds in gold, we found nothing. I think that we both half-expected to discover the key to that remarkable secret which he had somehow obtained, yet it was hardly to be imagined that he would carry such a valuable asset about with him in his luggage.

In the pocket of a small writing-book which formed part of the fittings of the suit-case I discovered several letters, all of which I examined and found them to be of no importance—save one, a dirty, ill-written note in uneducated Italian, which contained some passages which struck me as curious.

Indeed, so strange was the tenor of the whole communication that, with Reggie’s connivance, I resolved to take possession of it and make further inquiry.

There were many things about Burton Blair that had puzzled us for years, therefore we were both determined, if possible, to elucidate the curious mystery that had surrounded him, even if he had carried to his grave the secret of his enormous fortune.

We alone in all the world knew the existence of the secret, only we were in ignorance of the necessary key by which the source of riches could be opened. The manner in which he had gained his great wealth was a mystery to every one, even to his daughter Mabel. In the City and in Society he was vaguely believed by some to possess large interests in mines, and to be a successful speculator in stocks, while others declared that he was the ground-landlord of at least two large cities in America, and yet others were positive that certain concessions from the Ottoman Government had brought him his gold.

All were, however, mistaken in their surmises. Burton Blair possessed not an acre of land; he had not a shilling in any public company; he was not interested in either Government concessions or industrial enterprises. No. The source of the great wealth by which he had, in five years, been able to purchase, decorate and furnish in princely manner one of the finest houses in Grosvenor Square, keep three of the most expensive Panhards, motoring being his hobby, and rent that fine old Jacobean mansion Mayvill Court, in Herefordshire, came from a source which nobody knew or even suspected. His were mysterious millions.

“I wonder if anything will come out at the inquest?” queried Reggie, later that evening. “His lawyers undoubtedly know nothing.”

“He may have left some paper which reveals the truth,” I answered. “Men who are silent in life often commit their secrets to paper.”