“By all means, so long as it is understood that I commit myself to nothing.”

“That is understood. In the first place, you have no doubt heard of General de Merville?”

“De Merville of Khyber fame? Yes, I have heard of him.”

“He has a daughter, Violet de Merville, young, rich, beautiful, accomplished, a wonder-woman in every way. It is this daughter, this lovely, innocent girl, whom we are endeavouring to save from the clutches of a fiend.”

“Baron Gruner has some hold over her, then?”

“The strongest of all holds where a woman is concerned — the hold of love. The fellow is, as you may have heard, extraordinarily handsome, with a most fascinating manner, a gentle voice and that air of romance and mystery which means so much to a woman. He is said to have the whole sex at his mercy and to have made ample use of the fact.”

“But how came such a man to meet a lady of the standing of Miss Violet de Merville?”

“It was on a Mediterranean yachting voyage. The company, though select, paid their own passages. No doubt the promoters hardly realized the Baron’s true character until it was too late. The villain attached himself to the lady, and with such effect that he has completely and absolutely won her heart. To say that she loves him hardly expresses it. She dotes upon him, she is obsessed by him. Outside of him there is nothing on earth. She will not hear one word against him. Everything has been done to cure her of her madness, but in vain. To sum up, she proposes to marry him next month. As she is of age and has a will of iron, it is hard to know how to prevent her.”

“Does she know about the Austrian episode?”

“The cunning devil has told her every unsavoury public scandal of his past life, but always in such a way as to make himself out to be an innocent martyr. She absolutely accepts his version and will listen to no other.”

“Dear me! But surely you have inadvertently let out the name of your client? It is no doubt General de Merville.”

Our visitor fidgeted in his chair.

“I could deceive you by saying so, Mr. Holmes, but it would not be true. De Merville is a broken man. The strong soldier has been utterly demoralized by this incident. He has lost the nerve which never failed him on the battlefield and has become a weak, doddering old man, utterly incapable of contending with a brilliant, forceful rascal like this Austrian. My client however is an old friend, one who has known the General intimately for many years and taken a paternal interest in this young girl since she wore short frocks. He cannot see this tragedy consummated without some attempt to stop it. There is nothing in which Scotland Yard can act. It was his own suggestion that you should be called in, but it was, as I have said, on the express stipulation that he should not be personally involved in the matter. I have no doubt, Mr. Holmes, with your great powers you could easily trace my client back through me, but I must ask you, as a point of honour, to refrain from doing so, and not to break in upon his incognito.”