"Ach, you have got to the bottom of things, it seems," Van Sneck gurgled.

"Yes, and I have saved your life, foolish as it might seem," Bell replied. "You came very near to losing it the second attempt last night at Henson's hands. Henson is done for, played out, burst up. We can arrest him on half-a-dozen charges when we please. We can have you arrested any time on a charge of conspiracy over those pictures--"

"Of which I am innocent; I swear it," Van Sneck said, solemnly. "Those two Rembrandts--they fell into my hands by what you call a slice of good luck. I am working hand in glove with Henson at the time, and show him them. I suggest Lord Littimer as a purchaser. He would, perhaps, buy the two, which would be a little fortune for me. Then Henson, he says, 'Don't you be a fool, Van Sneck. Suppress the other; say nothing about it. You get as much from Littimer for the one as you get for the two, because Lord Littimer think it unique.'"

"That idea commended itself to a curio dealer?" Bell suggested, drily.

"But yes," Van Sneck said, eagerly. "Later on we disclose the other and get a second big price. And Lord Littimer he buy the first copy for a long price."

"After which you discreetly disappear," said Steel. "Did you steal those pictures?"

"No," Van Sneck said, indignantly. "They came to me in the way of honest business--a poor workman who knows nothing of their value, and takes fifteen marks for them."

"Honest merchant," David murmured. "Pray go on."

"I had to go away. Some youthful foolishness over some garnets raked up after many years. The police came down upon me so suddenly that I got away with the skin of my teeth. I leave the other Rembrandt, everything, behind me. I do not know that Henson he give me away so that he can steal the other Rembrandt."

"So you have found that out?" said Bell. "Who told you?"

"I learn that not so long ago. I learn it from a scoundrel called Merritt, a tool of Henson. He tells me to go to Littimer Castle to steal the Rembrandt for Henson, because Dr. Bell, he find _my_ Rembrandt. Then I what you call pump Merritt, and he tells me all about the supposed robbery at Amsterdam and what was found in the portmanteau of good Dr. Bell yonder. Then I go to Henson and tell him what I find out, and he laughs. Mind you, that was after I came here from Paris on business for Henson."

"About the time you bought that diamond-mounted cigar-case?" David asked, quietly.

Van Sneck nodded. He was evidently impressed by the knowledge possessed by his questioners.

"That's it," he said. "I buy it because Henson ask me to. Henson say he make it all right about the Rembrandt, and that if I do as I am told he give me 500. His money is to come on a certain day, but I pump and I pump, and I find that there is some game against Mr. Steel, who is a great novelist."

"That is very kind of you," David said, modestly.

"One against Miss Enid Henson," Van Sneck went on. "I met that young lady once and I liked her; therefore, I say I will be no party to getting her into trouble. And Henson says I am one big fool, and that he is only giving Mr. Steel a lesson in the art of minding his own business. So I ask no further questions, though I am a good bit puzzled. With the last bank-notes I possess I go to a place called Walen's and buy the cigar-case that Henson says. I meet him and hand over the case and ask him for my money. Henson swears that he has no money at all, not even enough to repay me the price of the cigar-case. He has been disappointed.

And I have been drinking. So I swear I will write and ask Mr. Steel to see me, and I do so."

"And you get an answer?" David asked.

"Sir, I do. You said you would see me the same night. It was a forgery?"

"It was. Henson had antic.i.p.ated something like that. I know all about the forgery, how my notepaper was procured, and when the forgery was written.

But that has very little to do with the story now. Please go on."

Van Sneck paused before he proceeded.

"I am not quite sober," he said. "I am hot with what I called my wrongs. I come here and ring the bell. The hall was in darkness. There was a light in the conservatory, but none in the study. I quite believed that it was Mr. Steel who opened the door and motioned me towards the study. Then the door of the study closed and locked behind me, and the electric light shot up. When I turned round I found myself face to face with Henson."

Van Sneck paused again and shuddered at some hideous recollection.

His eyes were dark and eager; there was a warm moisture like varnish on his face.

"Even that discovery did not quite sober me," he went on. "I fancied it was some joke, or that perhaps I had got into the wrong house. But no, it was the room of a literary gentleman. I--I expected to see Mr. Steel come in or to try the door. Henson smiled at me. Such a smile! He asked me if I had the receipt for the cigar-case about me, and I said it was in my pocket. Then he smiled again, and something told me my life was in danger.

"I was getting pretty sober by that time. It came to me that I had been lured there; that Henson had got into the house during the absence of the owner. It was late at night in a quiet house, and n.o.body had seen me come. If that man liked to kill me he could do so and walk out of the house without the faintest chance of discovery. And he was twice my size, and a man without feeling. I looked round me furtively lor a weapon.

"He saw my glance and understood it, and smiled again. I was trembling from head to foot now with a vague, nameless terror. From the very first I knew that I had not the smallest chance. Henson approached me and laid his hand on my shoulder. He wanted something, he gave that something a name. If I pa.s.sed that something over to him I was free, if not--

"Well, gentlemen, I didn't believe him. He had made a discovery that frightened me. And I had what he wanted in my pocket. If I had handed it over to him he would not have spared me. As he approached me my foot slipped and I stumbled into the conservatory. I fell backwards. And then I recovered myself and defied Henson.

"'Fool,' he hissed, 'do you want to die?'

"But I knew that I should die in any case. Even then I could smile to myself as I thought how I could baffle my foe. Once, twice, three times he repeated his demands, and each time I was obdurate. I knew that he would kill me in any case.

"He came with a snarl of rage; there was a knife in his hand. I hurled a flower-pot at his head and missed him. The next instant and he had me by the throat. I felt his knife between my shoulders, then a stunning blow on the head, and till I woke here to-day I cannot recollect a single thing."

Van Sneck paused and wiped his face, wet with the horror of the recollection. David Steel gave Bell a significant glance, and the latter nodded.

"Was the thing that Henson wanted a ring?" Steel asked, quietly.

CHAPTER LIV

WHERE IS THE RING?

Van Sneck looked up with some signs of confusion. He had not expected a question of that kind. There was just the suggestion of cunning on his face.

"A ring!" he murmured, vaguely. "A ring! What ring?"

"Now, look here," David said, sternly. "You are more or less in our power, you know, but we are not disposed to be hard on you so long as you are quite candid with us. Henson required something that he believed to be in your possession; indeed, you have as good as said you had it with you. Henson lured you into my house to get that more than anything else.

That he would have killed you even after he got it, I firmly believe. But that is not the point. Now, was not Henson looking for Prince Rupert's ring that you got from him by means of a trick?"

Van Sneck dropped his hands helplessly on the bed.

"Gentlemen," he whined, "you are too much for me. The marvellous accuracy of your knowledge is absolutely overwhelming. It was the ring Henson was after."

"The one you stole from him years ago! But what did you know about it?"

Van Sneck smiled.

"There is no living man who knows more about those things than I do," he said. "It is a pa.s.sion and a study with me. And some seven years ago, in Holland, Henson gave me the description of a ring he wanted me to copy.

Henson never told me what the ring was called, but I knew it was the Prince Rupert ring. I made the copy, and Henson was pleased with it. Some time later he came to me with the original, and asked for another copy. I meant to be honest, but my love for those things got the better of me. I made him two copies: the one good, and the other an exact facsimile of the Prince Rupert. These I handed over to Henson, and he went away perfectly satisfied that he had a good copy and the original. I chuckled to myself, feeling pretty sure that he would never find out."

"But he did find out?" David said.

"Only lately. Probably he took it to an expert for valuation or perhaps for sale. Lately his idea was to offer the ring to Lord Littimer for a huge sum of money, but when he discovered he had been done he knew that Lord Littimer would not be so deceived. Also he had a pretty good idea that I should keep the ring about me. You see, I dared not sell an historic gem like that. And, as usual, Henson was perfectly right."

"Then you had the ring in your pocket the night you came here?" asked Steel, with a commendable effort at coolness. "Did Henson get it?"

"No, he didn't," Van Sneck chuckled. "Come what might, I had made up my mind that he should never see that ring again. You see, I was frightened and confused, and I was not properly sober, and I did something with the ring, though to save my life I couldn't say what I did. Do you know, Dr.

Bell, I have lost my sense of smell?"